There were two reasons Chen Xuanyue had chosen to follow Wei Huo and work for him. Firstly, for the promise she had made. Secondly, to find out how to enter the Mythical stage.
However, when the two Mythical creatures told her what a Mythical creature was, she was stunned.
This reminded her of a math teacher explaining calculus to everyone. "This is calculus. It's simple, right? You'll understand once you get it."
A genius would nod to show that they understood. A student would try their best to listen to the class, take notes, and record this. However, they still would not understand.
