Ning Cheng was also helpless, he knew the reason. The rules here are much stronger than those in the world of cultivation. In addition, his cultivation level is not yet Nian Xing and he can absorb the starry sky energy that is more effective than spiritual energy, which makes his cultivation level rise rapidly. In just three years, he went from the late stage of Hua Ding to the perfection of Tribulation Realm....