C543 How to Earn Merit?

Zheng City Base.

When Zheng Feiyue and the rest returned, Xu Mu immediately locked Tony in his laboratory in preparation for his new research. Now in the field of human research, Xu Mu's progress had surpassed Zheng Xinyue's and he was at the top of the world.

Some of the potions that he developed, such as the Strength Enhancement Potion, the Speed Amplification potion