Since Tian Ming's Yin-Yang spell can stimulate Tian Ming's potential, why does God cast a spell? Aren't they enemies?

The Yin-Yang curse is to seal Tian Ming's memory, because Tian Ming's life is a big secret! ! ! ! Luna seems to be helping Tian Ming and Nie Gai. When luna took the moon to the East Emperor, she was kind to the moon and didn't look like a bad person! Tian Ming is actually the son of Jing Ke and Li Ji. He has lived in the palace of Qin since he was a child. If you want to know Tian Ming's life experience, you can ask me again! Hope to adopt, thank you!