One Sulfur, Two Nitrates, Three Carbons, Plus Some Sugar: Big Ivan

Half a month later, Li Fei was in his family's training ground, practicing suburi, a basic swordsmanship exercise, with a three-hundred-jin tungsten steel rod.

Three hundred jin was already close to the strength of a Soul Grandmaster with a Second Ring specializing in powerful attacks. It was easy to imagine that Li Fei's physical conditioning had reached the level of a Soul Grandmaster. As long as he trained for another year and condensed his spiritual power sufficiently, a Thousand Year First Ring would no longer be a dream.

As a transmigrator, Li Fei was not so rigid as to think only of fighting with his Martial Soul. Since his Martial Soul's offensive power was still weak in the early stages, he planned to rely on swordsmanship in battle.

The sword techniques of this world all involved soul skills and were basically controlled by noble families and sects. Even the Li Family, despite its wealth, had difficulty purchasing them. He could only keep practicing suburi, which had been considered a basic exercise in his previous life, while collecting some battlefield sword techniques from the military to strengthen his future combat ability.

Beside him, Li Fan was also holding an iron rod, though his weighed only two hundred jin. He practiced a rod technique Li Fei had collected, swinging it with tremendous force. Every strike tore through the air with a sharp whistle, showing that his strength was no longer weak.

"Keep it up, Li Fan! Your brother hasn't even complained about swinging a three-hundred-jin iron rod. You're only using two hundred jin, so you can't train for less time than him!"

Feeling the soreness in his arms, Li Fan kept encouraging himself inwardly. The way he looked at Li Fei was filled with worship, admiration, and envy.

They trained until noon. After finishing the nutritious meal Shen Chenyan had prepared, Li Fei had Li Fan soak in a medicinal bath while he headed to a small room in the northwest corner of the estate.

When he pushed open the door, he saw a small workbench covered with grinding and filtering equipment, along with quite a bit of black powder and several round iron balls.

"No matter what, I was a student at a top university in my previous life. Even if I've returned most of my knowledge to the school, I still remember the saying: one sulfur, two nitrates, three carbons, plus a little sugar—Big Ivan."

"This time, it'll definitely work!"

With a confident expression, Li Fei skillfully stuffed Black Powder into an iron ball, added some Iron Filings, then picked up the sugar he had prepared in advance and poured in twice the amount of the Black Powder. This was the result of many tests!

After carefully sealing the thin iron ball, Li Fei weighed it in his hand, made two more, and quickly headed to the training ground. He looked toward the straw dummy target in the distance.

He injected Soul Power into the iron ball, compressing it into a single point, then threw it forcefully near the straw dummy. His Soul Power erupted in an instant, igniting the gunpowder within.

Boom!

A massive explosion rang out, echoing through the entire Li Mansion. The ground trembled slightly. Li Fei lost his balance and fell onto the ground as thick gunpowder fumes rushed toward him. Looking over, he saw a two-meter-wide crater where the explosion had occurred. The straw dummy had vanished, replaced by scattered bits of straw all over the ground.

A figure darted over from afar. It was Li Ming, who had heard the explosion.

"Fei Er, are you all right?!" Li Ming pushed the speed of a Spirit King to its limit and arrived beside Li Fei in two flashes, asking anxiously.

"I'm fine!" Li Fei shook his head, pointed at the crater in the distance, and revealed an excited expression. "Dad, I did it!"

"It worked?! That bomb you mentioned before?" Li Ming asked uncertainly.

"Yeah!" Li Fei nodded frantically. "Dad, take a look and tell me how powerful this thing is, so I'll have something to compare it against!"

Li Fei's experience was still too limited for him to estimate the power of the Soul Power Mixed Version Grenade he had made. He needed Li Ming to provide a reference.

"All right, throw another one and let me see!" Li Ming also wanted to witness the power of the weapon Li Fei had made. It had actually blasted out a two-meter crater.

"Dad, watch closely!" Li Fei confidently injected Soul Power into a Homemade Grenade and hurled it into the distance. With another boom, a huge crater appeared where it landed, while Iron Filings flew in every direction at speeds too fast to see.

One of the fragments shot directly near Li Ming, leaving behind a sizable bullet hole.

Cold sweat dripped from Li Ming's forehead as he turned mechanically toward Li Fei and stammered, "Fei Er... this thing... you really... made it..."

"Yeah!" Li Fei looked serious as he asked, "Dad, how powerful is this Hand Grenade?!"

"Your father has seen Soul Saints before. This thing's power should be comparable to an ordinary soul skill from a Soul Saint. A typical Soul Saint who was caught unprepared would probably be seriously injured!"

Li Ming took several deep breaths to calm himself. After thinking it over, he gave his answer based on the strength he remembered.

"Only Soul Saints? It's actually worse than Tang San's hidden weapons. What a failure!" Li Fei muttered unhappily. Even the Wrath of the Buddha Tang Lotus, which was entirely a Mechanical Hidden Weapon, could kill several Soul Saints. Yet his Hand Grenade, filled with both gunpowder and Soul Power, was actually weaker.

He really wanted to know what kind of mechanism could allow a few tiny blades to be fired with enough force to kill Soul Saints. No matter how good the blades' material was, without enough Kinetic Energy when launched, they should not have been able to hurt anyone!

All he could say was that sects from a Wuxia World truly possessed knowledge that ordinary people could not understand.

"Fei Er, what did you say?!" Li Ming had not heard clearly and asked in confusion.

"Nothing. I'm just a little disappointed!" Li Fei hurriedly shook his head.

"You're disappointed with this power? If you prepared several of these at once, even a Soul Saint might get blown to death!" Li Ming looked stunned, unable to understand his son's way of thinking.

"Forget it, Dad, let's not talk about that! I'll give you the method for making them later. Have some trustworthy people make a batch in case of emergencies."

"All right, I'll arrange it right away. With this thing, we can venture a little deeper when we hunt Spirit Rings in the Star Dou Great Forest."

Seeing that Li Fei was unwilling to say more, Li Ming did not press him.

The two went to the workshop. Li Fei wrote down the method for making Hand Grenades and gave it to Li Ming, explaining some precautions for storing gunpowder before returning to his bedroom to continue researching ways to open his Meridians.

"The Hand Grenades are taken care of. From now on, I'll focus on cultivation and research, and properly prepare for the soul hunt a year from now."

With a powerful weapon like Hand Grenades as his Trump Card, he could avoid many dangers in the early stages. This allowed Li Fei to set his mind at ease and focus on cultivating and researching how to become stronger.

Holding the manufacturing instructions, Li Ming summoned several craftsmen and had them begin production according to Li Fei's instructions. He personally handled the final loading step, and the craftsmen did not know the proportions. In the end, they made not only some smaller ones, but also several with a diameter of one meter.

After storing the Hand Grenades in his Storage Space, Li Ming brought all the craftsmen's families to the estate and had them do various odd jobs there.

The craftsmen all understood why Li Ming had done this, and each of them swore that they would never reveal the process of making the Hand Grenades.