Bai Guo'er and Hai Yuetian were both at the early-Nascent Soul Stage, while Qi Lingzi was already a mid-Nascent Soul cultivator. 

"By the way, Junior Martial Sister, speaking of Master, he immediately went into seclusion again after returning from the primordial world 200 years ago; is he really planning to stay in seclusion until he makes a breakthrough to the late-Body Integration Stage?"

"I'm not particularly sure about that, either. Currently, the place where Master is in seclusion is surrounded by layers of restrictions, and even Senior Ice Phoenix isn't able to approach the secret chamber. It seems that Master is either preparing to make a breakthrough to the late-Body Integration Stage or cultivating some kind of powerful ability, and he doesn't want us to disrupt him," Bai Guo'er replied.

"Master took only about 300 years to progress from the early-Body Integration Stage to the mid-Body Integration Stage; if he can successfully progress to the late-Body Integration Stage in such a short time, that would simply be unheard of!" Hai Yuetian...