[Upgrade Black Iron Grade Fishing Rod]

The information this person posted had actually been seen by quite a few survivors, but most of them were unwilling to spend many resources to buy something of unknown use, so it remained unsold until Su Yu discovered and purchased it.

At this moment, Su Yu took out two Common Energy Crystals, along with some flour and clean water. He first crushed the Five-Star Wooden Treasure Chest Fragment and threw it into a basin, then poured in the pulverized energy crystals, followed by the flour and water, mixing and kneading them together.

In the end, using the two Common Energy Crystals, one Five-Star Wooden Treasure Chest Fragment, and some other auxiliary materials, Su Yu harvested a total of ten portions of Enhanced Bait.

By comparison, a single Common Energy Crystal was only enough to produce five portions of Enhanced Bait.

To be honest, if it weren't for the fact that he was short on Five-Star Wooden Treasure Chest Fragments, Su Yu would have definitely made even more of this Enhanced Bait.

After all, if this Enhanced Bait were in the hands of other ordinary survivors, the range of treasure chests they could fish up would be between 3 to 5 stars, but for Su Yu, it was different; he was specifically targeting Five-Star Wooden Treasure Chests.

"Phew, I can finally barely keep up with the consumption." Letting out a long sigh of relief, Su Yu packed away all the prepared Enhanced Bait, then stepped out of the area enclosed by the Thorn Fence and walked toward the edge of the small island.

Now that he had ten more portions of Enhanced Bait on hand, Su Yu was naturally prepared to use them.

For the time that followed, Su Yu basically maintained a rhythm of fishing up one Five-Star Common Wooden Treasure Chest every hour, continuing this for eight hours until the notification sound of nightfall rang in his ears.

[Ding, night is about to fall. The temperature will drop significantly; please take note to stay warm.]

"Time flies." Looking at the darkening sky, Su Yu temporarily stopped fishing, stood up from the Massage Chair, and stretched his limbs.

However, seeing the eight Five-Star Wooden Treasure Chests on the ground, a look of joy couldn't help but flash in Su Yu's eyes.

Treasure Chest Items: [Black Iron Mysterious Hook, Black Iron Grade Fishing Rod Upgrade Blueprint, +10 Island Area Fragments, 500kg of Rice, 300kg of Wagyu Beef, 10 Common Energy Crystals, Special Warning Device, Soft Hedgehog Armor.]

Among the eight Five-Star treasure chests Su Yu fished up this time, the Black Iron Mysterious Hook and the Black Iron Grade Fishing Rod Upgrade Blueprint, combined with the Century-Old Ice Silkworm Silk and Hundred-Refined Black Iron already in his possession, were enough to upgrade his Common Fishing Rod to a Black Iron Grade Fishing Rod.

It was just a pity that Su Yu hadn't fished up any Black Iron Grade bait this time.

Additionally, there were two other items that Su Yu had not fished up before.

[Special Warning Device]

Description: A technological product from another world, solar-powered. Once used, it can generate a circular warning range with a radius of ten meters.

Instructions: After turning on the power button, the Special Warning Device will start automatically. During operation, the device will monitor all living creatures within the warning range. The user can manually configure it to ignore the movements of living creatures that do not need to be monitored.

[Soft Hedgehog Armor]

Description: A craft product from another world. Wearing it increases one's defensive capabilities, capable of resisting slashes from a Hundred-Refined Goose-Quill Saber at most.

Note: Please do not blindly trust its defensive power; if you need to dodge, you should still dodge.

To be honest, when he saw the Soft Hedgehog Armor, Su Yu couldn't help but think of a certain television drama from his past life.

Shaking his head to cast aside these complex thoughts, Su Yu first picked out the Black Iron Mysterious Hook, the Black Iron Grade Fishing Rod Upgrade Blueprint, and the +10 Island Area Fragments from the treasure chests.

[Ding, your Double Happiness talent has triggered. You have obtained Black Iron Mysterious Hook x2, Black Iron Grade Fishing Rod Upgrade Blueprint x2, and +10 Island Area Fragments x2.]

First, he used the Island Fragment, expanding the area of his island by another 20 square meters. Then, Su Yu rushed into the Small Wooden Cabin, dug out the Hundred-Refined Black Iron and the Century-Old Ice Silkworm Silk, and placed them all beside his Common Fishing Rod.

[Ding, do you wish to use the Black Iron Grade Fishing Rod Blueprint, combined with Hundred-Refined Black Iron, Century-Old Ice Silkworm Silk, and Black Iron Mysterious Hook, to upgrade the Common Fishing Rod?]

"Yes." Following Su Yu's silent mental command, he watched as the fishing rod blueprint before him transformed into a beam of white light, merging directly into the Common Fishing Rod. As for the remaining materials, they were also drawn into the fishing rod under the influence of a mysterious power.

Su Yu was already accustomed to the way these blueprints functioned after use.

About five minutes passed in this manner, and a brand-new Black Iron Grade Fishing Rod finally appeared before Su Yu.

[Black Iron Grade Fishing Rod]

Description: Can be used to fish for Black Iron Grade 3-star treasure chests and below.

Note: The line and hook of the Black Iron Grade Fishing Rod are incredibly sharp and can also be used as a weapon; please be careful not to cut yourself.

Upgrade Materials: Hundred-Refined Black Iron x2, Black Iron Mysterious Hook x2, Century-Old Ice Silkworm Silk x2, Black Iron Grade Fishing Rod Enhanced Version Blueprint x1.

"Hmm." Upon seeing the information for the Black Iron Grade Fishing Rod, Su Yu could not help but frown slightly. He had originally thought this Black Iron Grade Fishing Rod would be able to fish for 5-star Black Iron treasure chests directly. It appeared he had overthought it; this thing would need to be upgraded one more time before it could fish for 5-star Black Iron treasure chests.

"Forget it, I don't even have the most basic Black Iron Grade bait right now, so there's no point in thinking so much." Picking up the Black Iron Grade Fishing Rod from the ground, Su Yu casually swung it, and a sharp whistling sound immediately rang out beside his ears.

"Damn it, I forgot I'm not at the seaside." Having just swung the rod, Su Yu realized his mistake, but since he had already cast it, stopping was clearly impossible.

"Clink." A metallic sound followed as the hook embedded itself directly into the wood of the Small Wooden Cabin.

Fortunately, the hook of the Black Iron Grade Fishing Rod was a Black Iron Mysterious Hook, so no damage occurred. However, it forced Su Yu to take a knife and cut a notch into the wood before he could pry the hook out.

After testing the feel of the Black Iron Grade Fishing Rod, Su Yu set it aside and turned to pick up the Special Warning Device.

After pressing the switch on top, Su Yu saw the device react as the screen lit up.

Then, a mechanical voice emanated from the device: "Please follow the prompts and press your middle finger onto the screen to bind your identity." Su Yu complied and pressed his finger down.

"Identity bound. Do you wish to initiate monitoring?"

"Yes."

Following Su Yu's confirmation, an invisible wave radiated outward from the Special Warning Device.