Forgotten River Seal

Shen Yan, a young handyman, has a Wangchuan seal in his palm that can swallow the world's spiritual power - at the cost of forgetting one of the most precious memories every time he swallows it. His mother left him a piece of jade and said she would come back to pick him up when the thread on the jade core shone. In seven years, the thread has not shone, the jade is broken, and he has forgotten his mother's face. Before he completely forgets himself, he wants to go to the seventh floor of the Valley of Ashes and ask: Mom, where are you?