Possibilities

"Is there a possibility for the impurities stop entering the body?" Gao Lan Mei asked as she crouched to the ground.

Ma Fei Hong shook her head, "If there is such thing, that would be wonderful and we do not need to worry about it in the first place."

Impurities get inside the being during cultivation, that the body filtered immediately.

Except for those who are so impatient to increase their degrees, causing madness because a physique can just take a small number of impurities at a time.

Jia is not something that they can just stop entering a beings system unless all the entries in the body are sealed, that also stops cultivation as well, or you are good as dead.

Gao Lan Mei just nodded thoughtfully, her hand holding a ritual knife on, to carved marks on the ground.

"Too bad. But we can never know if we won't try," Gao Lan Mei, whispered to hersel, as she digests the knowledge Ma Fei Hong.