It turns out that Empress Chi Yao's mentor came from the Ancient Era.
In comparison to the Ancient Era, the Ancient Era, or the Ancient Continent, is a higher plane. This so-called higher level refers to the strength of the cultivators, meaning that the cultivators of the Ancient Era have a higher realm and stronger powers than those of the Ancient Era.
The cultivators of the Ancient Era have a minimum cultivation base of Great Sage, and Great Sage was the highest cultivation base in the Ancient Era.
In the Ancient Era, once cultivators advanced to Great Sage, they could cross time and enter the Ancient Era; however, the cultivators of the Ancient Era cannot casually enter the Ancient Era due to the restrictions of Heaven and Earth Laws.
For example, a strong being from the Ancient Era could wipe out the entire Ancient Continent with a wave of their hand. Their arrival would be a disaster for a plane, which is obviously not allowed, so Heaven and Earth Laws have restrictions.
