The layout of the research room is simple.

With just a simple glance, Zheng Kai saw everything inside clearly.

in the research room.

There are many metal-based materials.

Zheng Kai was not familiar with this aspect, so most of them didn't know what the material was.

But it's worth mentioning that

Du Meifang's most important material is still mutated bone spurs.

I don't know if it's Zheng Kai's illusion, the mutated bone spurs that Du Meifang studied seem to have some kind of restraint effect on tricks, and they are also effective against top murderers.

This is the most exaggerated!

You know,

The top murderer is already an existence at the top of the food chain in the world of treachery.

However, the bone spurs that are polluted and mutated have a restraining effect on the top murderers......

"Crazy! Do you call this a beautiful life? 》Chapter 770 Extreme One Dozen Three is in the middle of the hand, please wait a moment,

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