Look at the gods that other people have met. They either know how to make elixirs, or they have the ability to subdue monsters. No matter how bad they are, they will help the protagonist fight monsters and level up. The gods Tian Jiuer met were not ordinary weak. He often said that - you have to rely on yourself for everything! He refused to teach her anything, but he let her learn the most important thing...
Purpose: The little fairy teaches mortals to rely on themselves in everything.