Ning Cheng looked at the emptiness outside the shuttle and said slowly, I promised a lost senior that I would help him find the Nine Yins of the Earth's Core, and then he would do me a favor. That senior has the highest level of cultivation, so I need the most of the Nine Yins of the Earth's Core. If it's 100%, I need 60%, and the other 40% will be divided between the two of you....