Hundun Dan Shen

When an ancient God imprinted a divine mark on Gu Yun and weakened his spiritual power, he was demoted to the rank of a handyman and fell from his pedestal as a genius. Because of him, his father was deposed as patriarch and imprisoned by their rival family, the Feilu clan. However, Gu Yun quickly discovered the secret in his body and began working with the ancient God within him.

(Source: Bilibili Comics)