Among the Twelve Laws, there is a division between the Righteous Path and the Heretical Path; reaching a certain level of cultivation allows one to Advance.
This is the situation, yet the specific standards and definitions are not at all strict.
After all, this is not some Ancient Blasphemous Tablets passed down from the Primordial era.
It's a common textbook compiled by the President himself.
Wang Yunxiao originally got the first edition from Teacher Liu.
And the material Teacher Bai later obtained was the second edition.
There are many theories about Advancement, such as the traditional Refinement of Essence into Qi, Refine Qi into Spirit, and what Li Mumu summed up herself as first level, second level. There's also Mu Yusheng's discussion of Evolutionary Form, Advanced Form...
There is no clear standard.
As for methods of Advancement, opinions vary widely, and explanations are vague.
