Bacteria

"Usually, a clean freak wouldn't be willing to touch something dirty," Jiang Yan explained.

Zhou Wen was enlightened. "You mean to say that you want us to dirty our bodies? Then, Bai Ze won't be willing to touch us. You should have said so earlier. This isn't anything difficult. It would have been better for me to make preparations earlier though. I'd have got some pot-bottom soot before coming…"

"That's not the case. No matter how dirty our bodies are, it doesn't matter to Bai Ze. This is because it doesn't need to touch us at all. It only needs one word to finish us. If we're dirty, it might attract its annoyance. It could chase us off the mountain, but after seeing how dirty we are, it might just throw us down the cliff to our deaths," Jiang Yan said as he shook his head.

"Then what do you mean?" Zhou Wen really couldn't figure out what Jiang Yan meant.