Lin Yu didn't know whether the survivors who awakened the gold-type superpowers hid their superpowers or not.

It's not that she didn't bring Cheng Xiangbei out to kill zombies and improve his fighting instincts, but out of fear of a series of consequences caused by high temperatures, she had no choice but to let Cheng Xiangbei stay in the villa to strengthen water navigation tools such as ships and speedboats.

After Lin Yu finished dealing with the last third-tier ice zombie within a ten-mile radius of Qingquan, a pleasant system notification sounded in his ears.

[Ding Di - Congratulations to the host for completing Side Mission 9. Clearing the zombies within a ten-mile radius of Qingquan Mountain, creating a safer farming environment. Received a bonus crystal core synthesis opportunity x1.]

Lin Yu was stunned for a moment. What does crystal nucleus synthesis mean?

Could it be that as she thought, using low-level crystal cores to synthesize high-level crystal cores?

"Yes, may I ask if the host would like to use the crystal core synthesis opportunity immediately? It will cost 1,000 first-order crystal cores to randomly synthesize one supernatural crystal core."

Lin Yu hesitated for a moment and asked, "Tongzi, will the crystal core after synthesis be first-order or second-order? Or even third-order?"

"Level 3."

She was still thinking that if the crystal core after synthesis was of the first order, it would be unnecessary because its value was too low. Not only would it be useless, but it would also be a waste of the crystal core.

Hearing the system's answer, Lin Yu said without hesitation: "Synthesize immediately!"

After all, the value of a third-order crystal core far exceeds the value of 1,000 first-order crystal cores.

[Later…]

[First-order crystal core - 1000.]

[Drip - Synthesis successful. Congratulations to the host for obtaining a third-order water crystal core x1.]

Lin Yu's brain froze instantly. He actually synthesized a third-order water crystal core?

After all, the system said that the synthesized crystal core was random. She thought of many possibilities in her mind, but she never thought that it would be a third-level water crystal core!

The system is so thoughtful that it’s not an exaggeration to say it’s her biological mother!

Come to think of it, it seemed that every time she completed a task, most of the rewards given by the system were related to the task, and they were basically things she needed the most.

Lin Yu simply didn't know how to express his love for the system.

Pei Yan noticed that she was in a daze and waved his hand in front of her eyes: "Lin Yu."

Lin Yu came back to his senses and smiled at the two of them, "Let's go, let's go back."