Key to Heaven

Where is the key to heaven? In my mind, how to obtain it depends on Li Fan. He was talented, but he was sealed away by his parents; he was carefree, but something unexpected happened and separated him from his sister; he was kind-hearted, but he was forced to live in the devil world;... A person will face many choices in his life, let's see how Li Fan chooses his life path step by step, and finally surpasses the Nine Heavens.