The moment Qin Zhicheng saw the crescent moon, his mind screamed that he should take it for himself. Then he was so selfish and took away Crescent Moon.
Fifteen years after Qin Zhicheng had his beloved, he was ruthlessly taken away again. He hates, he complains, and he wants to reason with God.
Sorry for the author's incompetence, the introduction does not explain all the wonderful content of the story.