Extracting Three Blue Corpse Crystals

Ye Li opened the synthesis grid in his mind and started synthesizing zombies.

The only regret was that there were no mutant zombies.

Ye Li's virtual finger speed in his mind had reached an incredible level.

"A level 3 zombie synthesized…"

"A level 4 zombie synthesized…"

In the end, Ye Li merged all eighteen Clawed Zombies into second-tier zombies.

Ye Li thought they were alright, as second-tier zombies still possessed some combat power, but he naturally felt they were still too weak.

What about the mutant zombies?

To evolve, mutant zombies needed corpse crystals from the brains of other zombies, so did Xiao Hei.

Ye Li was about to use his Heavenly Spirit Eyes to search for some when he noticed Xiao Yuzhu had turned to stone.

Her eyes were wide open, and her fair face was filled with fear, as if she had just witnessed the most horrifying scene in history.