Chapter 41

1. Magical assistance in the greenhouse

September sunlight flowed through the greenhouse's glass dome like melted honey, refracting into rainbow-colored patches on the Venomous Tentacula's viscous green sap. Hailey crouched in front of the seventh row of pots, the Hufflepuff badge on her knee smeared with soil, as she changed a Mandrake's soil with vibranium tweezers. Her father had specially modified them for her, and the gear pattern on their tips turned gently with her fingers, making an almost inaudible "click." Supposedly, they could absorb 30% of magical noise, sparing her the dark circles a Mandrake's cries could cause.

"Careful," Eileen called from the next pot. She was sprinkling silvery-green nutmeg powder into the soil, and the powder that landed on her black gloves looked like a scattering of crushed diamonds. "Last week, Gabrielle in third year let her tweezers slip, and a Mandrake gave her panda eyes with its crying. She's still got dark circles."

Hailey was about to wave her vibranium tweezers to show them off when she heard a familiar argument at the greenhouse door. Harry Potter held up a dog-eared copy of the Standard Book of Spells, his brow knotted like a scarf tied too tightly; Ron Weasley had brown soil on the tip of his old wand and had clearly just "battled" some plant or other; Hermione Granger was copying the instructions on a sign with a quill, the edges of her parchment already curling into waves like a lake ruffled by the wind.

"I told you the angle was wrong!" Hermione said impatiently, her nib poking little dents in the paper. "You're turning your wrist too hard. Of course the feather's going to fly away!"

"But that's how the book shows it!" Harry held up the textbook, his voice full of a first-year's stubbornness. "The stress in 'Wingardium Leviosa' is clearly on the second syllable!"

Hailey and Eileen exchanged a glance and couldn't help laughing. Eileen pressed a fresh mint leaf into Hailey's hand, its cool fragrance mingling with the scent of soil as it reached her nose. "Shall we help them? Look at Harry's face. If he keeps practicing, he'll crush the feather."

Hailey wiped the soil from her hands. Her vibranium bracelet gleamed coldly in the sunlight, with a few Mandrake rootlets still caught between its gears. "Remember our first year? You said 'Slugulus Eructo' instead of 'Lumos,' and your wand sprayed green snot everywhere. Poor Aor the House-elf had to wash cauldrons for three days."

"That was an experiment!" Eileen indignantly poked her arm, and turmeric powder drifted from her panda hair clip onto Hailey's cloak. "Besides, if it weren't for that 'experiment,' how would I have discovered that turmeric powder neutralizes slug mucus? That trick's in high demand in Potions Class now."

When the two reached Harry and his friends, Ron was trying to stick the feather to his wand. "If nothing else works, glue should do it, right? Professor Flitwick's so old, he probably won't notice..."

"Don't be silly." Hailey gently lifted the feather with her tweezers, and it trembled obediently at her fingertips. "Glue blocks the flow of magic, like binding gears with Muggle tape. They won't turn." She turned her wrist slightly, and the feather suddenly traced a perfect ∞ in the air. "See? It's not just the spell. Your wrist has to draw an infinity symbol like this, like adjusting direction when you're riding a broom. Find the point where you apply the force."

Harry's green eyes lit up like two flames suddenly fanned brighter. "Riding a broom?" He tried to imitate the movement, and the feather did indeed float shakily into the air, lurching like an injured moth. "Really! It moved!"

Eileen pressed a small cloth pouch into Hermione's hand. The nutmeg inside gave off a warm fragrance. "Smell this. It'll help you concentrate. When I couldn't remember 'Alohomora' last year, I used it to perk myself up. It's ten times gentler than Baruffio's Brain Elixir, and Filch won't confiscate it as contraband."

Hermione bent her head and sniffed, then suddenly widened her eyes so much that her round glasses slipped to the tip of her nose. "This is... nutmeg? I've seen it in the Illustrated Guide to Potions Ingredients! The really pure kind!"

"I added a little lavender." Eileen tossed her head proudly, the ends of her hair brushing Hermione's textbook. "My mum says the smell of spices opens up memory pathways. It works better than rote memorization. Like how smelling baked biscuits makes you think of the kitchen right away."

Ron stared at Hailey's tweezers, then suddenly pointed at the gear pattern. "That thing's Muggle, isn't it? I've seen similar metal parts in Muggle Studies!"

Hailey handed him the tweezers. The gear pattern turned gently in Harry's palm, making a faint rubbing sound. "My dad modified them with vibranium. They can reduce the effects of shaky hands by 60%." Watching Ron clumsily pick up the feather, she suddenly remembered how she, too, had stared at tweezers like this in her first year. "Magic is actually a lot like Muggle machinery. With both, you have to find the point where you apply the force. Look, it's like unscrewing a bottle cap. Force alone won't do it; you have to get the angle right."

The greenhouse bell suddenly rang like a set of wind chimes, signaling the end of class. As Hailey put away her tweezers, she noticed Harry secretly drawing ∞ symbols in his notebook, his pencil tip leaving a dense cluster of tiny dots on the paper. Hermione carefully put the spice pouch into her bag and wrapped it in three layers of silk handkerchief; Ron practiced the Levitation Charm he had just learned on the Venomous Tentacula, and though he only made one leaf twitch, he grinned as if he had won at Quidditch.

"If you have trouble, you can come find us in the Hufflepuff Common Room." Eileen pressed gingerbread into their hands, each biscuit decorated with a miniature wand in icing. "We're by the pumpkin sofa at the very back. It's easy to find—it's the corner that always smells of nutmeg."

Hailey added, "Don't worry about Professor Flitwick taking points. He actually likes seeing students work things out for themselves, as long as you don't turn the feather into a frog. I did that last year, and he made me dust every feather as punishment."

As they watched the three run excitedly toward the corridor, Eileen suddenly nudged Hailey's arm. "Don't you think they're a lot like us last year?"

Hailey gazed at the lightning scar on Harry's retreating figure. Her vibranium bracelet gave a slight tremor, like a pebble dropped into the lake of her heart. She remembered the words in her father's letter: "The gears of fate always mesh when you least expect it. Sometimes you think you're a spectator, when you've already become a part of them." Perhaps being a second-year senior meant more than simply knowing a few more spells than others.

2. Cross-dimensional notes in the library

The scent of parchment in the Hogwarts Library was always mixed with the sour smell of old ink, like a cup of lemon tea left sitting too long. Hailey yawned over Principles of Intermediate Transfiguration, spinning a vibranium bookmark rapidly between her fingers. Her father had made it from pocket-watch parts, and its edge was engraved with "23.5 degrees is the optimal angle for Transfiguration." Supposedly, he had reached that conclusion after studying the Transfiguration of a hundred animals, making it more precise than the textbook.

"Reading your 'Study of Magic from a Muggle Perspective' again?" Eileen piled a stack of Complete Guide to Potions Spices volumes on the table. Her blond hair brushed the edges of the pages, and the air it stirred made a corner of Hailey's notes slip out, revealing annotations in red ink. "Professor Sprout says the Venomous Tentacula are especially bad-tempered this year. They need three times as much lavender powder to calm them down. Where's the vibranium spade your dad sent? Lend it to me. An ordinary iron spade can't dig through their roots at all."

Hailey was just about to answer when she heard a muted argument behind the bookcase. Hermione's voice was like a canary being squeezed, shrill and urgent. "I told you to follow the steps! You skipped 'stir clockwise seven times.' Of course the cauldron's giving off green smoke!"

"But the book says 'about seven times'!" Ron sounded aggrieved, like a House-elf falsely accused. "What's the difference between six and seven? Can a potion count?"

Hailey and Eileen exchanged a glance and tiptoed around the bookcase. Harry and his friends were gathered around a smoking cauldron. The purple liquid inside was bubbling like a pot of spoiled grape juice, with occasional sparks splashing out. Hermione was stamping her feet in distress, her brown curls coming loose; Ron held his wand helplessly, his ears as red as beetroot; Harry was trying to fan away the smoke with a textbook, only to scorch a hole in a page of A History of Magic. The burnt smell mixed with the scent of the potion, as though someone were burning a spice pouch.

"Need a hand?" Hailey's voice startled Ron so badly he nearly dropped his wand into the cauldron. Eileen had already pulled out a spice pouch embroidered with a butterfly and sprinkled a handful of magically modified turmeric powder into the smoking liquid. The green smoke instantly turned into harmless white mist, carrying a scent of cinnamon.

"Ginger can neutralize the toxicity of Mandrake juice." Eileen clapped her hands, the gem on her panda hair clip glowing red like a little sun. "Are you brewing Shrinking Solution? You got the third step wrong—you have to stir clockwise, not counterclockwise. Last year, when I was turning a frog into a teacup, I got the direction wrong, and the teacup grew webbed feet."

Hermione's face instantly turned beetroot red. She hurriedly opened Magical Drafts and Potions to the page. "But the arrow in the book points counterclockwise..."

"That's a printing error." Hailey opened her own notes, which contained annotations marked in red with vibranium powder, along with a drawing of a crooked teacup frog. "My dad checked against the 1926 original. The correct step should be 'clockwise seven times, pausing for 0.5 seconds each time.' It's like turning a Rubik's Cube: get the direction wrong and it jams." She suddenly pointed to a waveform diagram in her notes. "Look, the magic curve is more stable when you stir clockwise. It's like the way you keep your balance on a broom: there are ups and downs, but you don't crash."

Harry pointed at the chart in her notes, lightly touching the paper with a fingertip. "What's this? It looks like a Muggle maths problem."

"It's a chart of magical fluctuations." Hailey tapped the wavy line with her fingertip. Sunlight passed through her fingertips, casting tiny patches of light on the paper. "My dad modified a Muggle oscilloscope into a magic detector. This is measured data. See? The waveform is more regular when you stir clockwise. It's like your breathing rhythm when you play Quidditch; if it gets irregular, you get tired." She suddenly remembered something and pulled a small tin from her canvas bag. "Oh, right, this is for you."

The moment the tin opened, Ron's eyes shone like two little lamps. Inside were twelve magical biscuits in different flavors, each with the name of a spell written on it in icing. "'Memory Charm' is mint-flavored. Eat it and you'll temporarily forget your nerves. 'Unlocking Charm' is cinnamon-flavored, and it makes your fingers more nimble," Hailey explained. "It's Eileen's mum's secret recipe. She says flavors can help with memory. The last time I had a Transfiguration exam, these helped me remember the spell for turning a mouse into a button."

Hermione had already picked up a biscuit marked "Levitation Charm" and carefully taken a small bite. "Does this really work? I always feel..."

"Better than Ron writing spells on his hand," Eileen interrupted with a laugh, stuffing a "Shield Charm" biscuit into Ron's mouth. "Last time he washed half of 'Protego' off when he washed his hands. Then Malfoy disarmed him in Duelling Club and mocked him for being 'the Weasley who only knows half a spell.'"

Harry carefully picked up a biscuit, then suddenly pointed at the vibranium bookmark in Hailey's notes. "Can I have a look at that? It seems to be moving."

Hailey handed him the bookmark. The gear pattern turned gently in Harry's palm, making a faint rustling sound. "It can sense fluctuations in magic. If the angle is wrong during Transfiguration, it heats up. My dad says magic is like a clock: every part has to be in the right place, not a fraction more or less."

The footsteps of Madam Pince, the librarian, approached from a distance, thudding like a blunt axe chopping wood. The four hurriedly packed away the cauldron. Eileen pressed a packet of first-aid spices into Harry's hand, its label reading "For emergencies: magically modified ginger powder no. 2-prevents vomiting; nutmeg for alertness." Hailey gave Hermione a copy of her Transfiguration notes, with "first-year essentials" marked in highlighter.

"Remember not to use these little tricks in front of Snape," Hailey said in a low voice, touching Hermione's arm with her fingertips. "He'll say we're treating Potions ingredients like kitchen seasonings. Last time I added a little ginger to sweeten a Draught of Peace, he took five points and said, 'Hufflepuffs really are only fit for kitchen work.'"

As they watched the three slip out of the library carrying the cauldron, Eileen suddenly laughed so hard she doubled over, spilling the spice pouch in her hand. "Did you see Ron stuffing biscuits into his pockets? He looked just like a Gnome stealing sweets, afraid someone would snatch them away."

Hailey gazed at the vibranium annotations in her notes and suddenly felt that being in second year meant turning all those stumbling experiences into a compass she could pass on to others. As her father always said, "The best inventions aren't powerful spells, but little tools that help others avoid taking the long way around-like a handy pair of tweezers, or a useful reminder."

3. A senior's secrets on the Quidditch Pitch

The sky above Hogwarts was like a polished sapphire, and the Golden Snitch shimmered over the Quidditch Pitch like a forgotten star. Hailey sat in a corner of the stands, tracking a Bludger's path with vibranium binoculars. The gears on the barrels turned gently with her breathing. Her father had modified them using the principles of a Muggle high-speed camera, and they could replay things at one-tenth speed, showing even the patterns made by the Snitch's beating wings in perfect clarity.

"Harry's dive is still too steep," Eileen said, biting into a Rock Cake. Butter crumbs fell onto her yellow Hufflepuff scarf like a scattering of stars. "At this rate, sooner or later he'll crash into Sirius—I mean the star, not anything else. Last time he nearly hit a goalpost, and he scared me so badly I spilled the ginger tea I was holding."

Hailey adjusted the binoculars' focus, bringing Harry into sharper view through the lenses. "He wants to catch the Snitch too badly. It's like how we always wanted to brew the perfect potion in our first year, and either made the fire too hot or used the wrong ingredients." She suddenly pointed at the pitch. "Look, his broom's tail is a little crooked. Malfoy knocked into it during last week's practice match with Slytherin, didn't he? No wonder he keeps veering left."

Eileen pulled out a small cloth pouch containing dragon's blood resin that glowed dark red. "I brought this. It can hold it in place temporarily. But it would be best to have Hagrid reinforce it with a vibranium patch—the kind your dad sent. They're three times more flexible than ordinary silver sheets. My broom handle cracked last time, and it could still fly after I put one on."

At halftime, Harry rushed into the tent beside the pitch, drenched in sweat. The lightning scar on his forehead gleamed with it. Ron and Hermione were waiting for him with water bottles, and Ron still had a piece of popcorn stuck to his ear, clearly having enjoyed himself in the stands. As Hailey and Eileen approached, they heard Ron saying, "I told you to bring spare broom bristles, but you wouldn't listen. Look what happened now..."

"Need a hand?" Hailey held up the resin. Eileen had already crouched to inspect the tail of the Nimbus 2000, her fingertips brushing the scratches on the wooden surface. "It's a little loose, but nothing serious. It's like a loose door handle-just tighten it up."

Harry watched them skillfully secure the broom with the resin, then scratched his head, sweat dripping from the ends of his hair. "Did you have this much trouble in second year too? I always feel like I can't do anything right. I get spells wrong, ruin potions, and even riding a broom..."

"More trouble," Hailey interrupted with a smile, using a clean handkerchief to wipe the sweat from his forehead. "The first time I rode a broom, I treated it like a Muggle bicycle and crashed into the Whomping Willow. Luckily, it was asleep at the time, or I might still be hanging from its branches." She pulled a metal ring from her canvas bag and clipped it onto the broom handle. The gears on the ring suddenly turned, making a faint "click." "This can absorb impacts, like adding a cushion for your wrist. Next time you crash into something, at least the shock won't make your arm go numb."

Eileen pressed a piece of gingerbread into Harry's hand. The biscuit was shaped like a Golden Snitch, with glitter on its wings. "This one's 'speed charm' flavored. My mum says ginger makes people react faster. Oh, and to deal with Malfoy's feints, watch his knees. Whichever way someone's going to turn, their knees move first. It's much more reliable than watching his wand. That's how I dodged his Bat-Bogey Hex last time."

Hermione suddenly pointed at Hailey's binoculars. "What are those? Can I have a look? They seem much clearer than ordinary binoculars."

Hailey handed them to her, and the markings on the barrels immediately caught Hermione's attention. "They can slow down the Snitch. My dad says they work on the same principle as Muggle slow-motion footage. Look, before the Snitch turns, its wings contract for 0.3 seconds, like a cat arching its back before it jumps."

Ron snatched the binoculars and suddenly shouted, startling several sparrows outside the tent into flight. "I see it! It flew east! There's a little notch in its wing!"

When the second half began, Harry's broom was noticeably steadier. As he caught the Golden Snitch in a beautiful dive, Hailey noticed a flash from the metal ring on his wrist. She had secretly put it on him, hoping it would help him avoid those unnecessary collisions. Eileen counted the points beside her, her fingers dancing rapidly on her knee. "One hundred and fifty points! Gryffindor's sure to win! I told you your little trick would work."

Hailey gazed at the cheering crowd on the pitch. Her vibranium bracelet glowed warmly in the sunlight, and turmeric powder drifted from between its gears as she moved. Perhaps being a senior meant turning the stones that had once tripped her into signposts that could light the way for others, like the tenderness her father hid in every invention: inconspicuous, yet reliable enough. As she put it, "Flying cleverly beats flying fast. It's like solving a maths problem: finding the right formula is much faster than grinding through the calculations."

4. Ginger tea and secrets in the common room

The pumpkin lanterns in the Hufflepuff Common Room always carried a caramel scent, their warm yellow light flowing over the velvet sofas like melted toffee. Curled up in the farthest corner, Hailey wrote a reply to her father. Her quill swept across the parchment, leaving emerald-green ink made from Venomous Tentacula juice mixed with turmeric powder. It turned gold when heated, a secret code between her and her father.

"The vibranium bookmark works wonderfully. It helped three first-years solve a Transfiguration problem. The red-haired one keeps turning frogs into teapots, almost as impressive as when you turned your pocket watch into a clockwork bird... Eileen's turmeric powder has become popular in Potions Class. Professor Sprout says it should be mass-produced and even asked whether she could use the Leicester family trademark..."

Eileen suddenly came through the cloth curtain, carrying a steaming teapot in both hands. The white mist rising from its spout carried the scent of nutmeg. "Guess who's here? Your little fans."

Harry, Ron and Hermione followed her in, their faces still flushed from the Quidditch victory. Hermione clutched a copy of A History of Magic with a Butterbeer stain on its cover; Ron stared at the gingerbread on the table, drooling, his fingers moving restlessly in his pocket as he clearly wrestled with whether to take some.

"We wanted to ask you something," Harry said, twisting his scarf between his fingers. His voice was low, as though he feared the walls might hear. "About the Invisibility Cloak. It doesn't seem to hide the sound of footsteps. Last time we sneaked into the library, Filch nearly caught us."

Hailey sprinkled a handful of ginger into the teacups, and its spicy aroma immediately spread through the air. "My dad says you can stick thin vibranium sheets to your heels. They can absorb 70% of the sound. But don't let Filch see them. He's allergic to Muggle things. Last time he confiscated George's slingshot, saying it was a 'Muggle cheating tool.'"

Eileen had already pushed the gingerbread toward Ron, the icing on the biscuits glittering in the lamplight. "Try this. It has an anti-sleep charm on it. Have you been staying up late studying the Invisibility Cloak? I thought your eyes looked red when you were catching the Snitch."

Hermione opened A History of Magic. The name "Nicolas Flamel" was marked on the page in highlighter. "We're looking into him. He and the Philosopher's Stone..."

"Shh-" Hailey suddenly pressed down on her hand and pointed to the younger students in the corner of the common room, who were talking quietly around a chessboard. "Some things can't be discussed in public." She dragged a wooden chest from behind the bookcase. Its surface was engraved with gears and star paths, and it was the "cross-dimensional refrigerator" her father had sent. "Let's talk inside. This thing has a Silencing Charm on it."

The moment the refrigerator door closed, the sounds outside vanished, as though swallowed up by cotton. Eileen poured some mead into a vacuum flask, and steam condensed into droplets on its vibranium inner walls, sliding slowly down the gear pattern. "My parents said Flamel mentioned 'Muggle principles of thermodynamics' in his alchemy notes. They might have something to do with the vibranium your dad studies. Last year I saw similar drawings in our storeroom, with stars and gears on them."

Harry's eyes lit up like two lanterns suddenly kindled. "Really? We've been looking for ages without finding a clue. There's pitifully little information about him in the library, as if someone deliberately hid it."

"I can help you look through the Leicester family's old records." Hailey took Ceylon cinnamon from the refrigerator and sliced it thinly with a small vibranium knife. "My dad collected lots of cross-disciplinary research materials. Once I saw a notebook with a structural diagram of the Philosopher's Stone, and a Muggle periodic table of the elements beside it. But you have to keep it secret. He doesn't let outsiders know how closely we work with Muggle technology. He says the Pure-blood families would ostracize us."

Ron had already eaten three pieces of gingerbread, and icing clung to the corner of his mouth. "Are all second-years as amazing as you? You know so many secrets, and you have such a cool refrigerator."

"We only learned after stumbling countless times ourselves," Eileen said with a smile, pressing another piece into his hand. "Just like you now know to stir potions clockwise. One day, you'll pass these things on to first-years too, and tell them, 'Don't be afraid of making mistakes, because we've all made them.'"

Looking at the light in Harry's eyes, Hailey suddenly remembered what she had been like when she first transmigrated. Back then, she had always felt like an outsider, trembling in the magical world while clutching the Muggle One Hundred Thousand Whys. Gradually, she had discovered that the most magical magic at Hogwarts was not brooms that passed through walls or talking portraits, but the people willing to turn their experience into gifts. Just as now, she shared the secret of vibranium with Harry, as her father had once taught her the wisdom of Muggles.

As Harry and his friends left with the copies of Hailey's materials in their arms, Eileen suddenly said, "Don't you think we're like their secret weapons?"

Hailey gazed at the gear pattern on the refrigerator. Her vibranium bracelet gave a soft "click," as if agreeing. She remembered the last line of her father's letter: "True passing on of knowledge isn't giving others the answers, but teaching them how to find them-like giving someone a fishing rod instead of a fish."

Outside the window, moonlight streamed through stained glass, casting speckles of light on the gingerbread. Hailey picked up a biscuit and took a bite, the bite of ginger mingling with the sweetness of honey on her tongue. Perhaps this was the taste of growing up: a little adventure, a little warmth, and many secrets worth sharing. As she put it, "Secrets only sprout when you share them. Keep them bottled up and they'll just grow moldy."

The common-room clock struck ten, and the glow of the pumpkin lanterns gradually softened. Hailey put the remaining gingerbread in the refrigerator and watched it become enveloped in a magical Preservation Charm. She suddenly felt that life in second year was like this cup of ginger tea: spicy at first taste, but leaving a comforting warmth behind. And the kindness hidden among gears and spices would, like seeds, eventually grow into unexpected tenderness at some unsuspecting moment.