C2938 Things Are Different from People

Chang Zai took the cauldron carefully. It was just as Gu Xiaoxiao had said; it was not affected by the Yin Qi. He went over it over and over again, and found that there was a strange power inside the cauldron, trapping the Yin Qi inside of it. It could not leak out any Yin Qi, nor could it be in direct contact with medicines.

Not only that, the power could also control the loss of the medicine