Who Says a Fisherman Can't Become the Ancestor of an Immortal Clan?

After transmigrating to an immortal dynasty, he awakens memories of his past life and finds himself with a gambling-addicted father, a sick mother, and young siblings... Shen Musheng thought he would spend this life picking up his old identity as a fishing enthusiast and building a fishing business. But just after catching his first treasure fish, the Immortal Clan's Treasure Codex arrives! First: From now on, every treasure fish in the Qingyuan Immortal Dynasty belongs to the Shen family! Second: My Shen Immortal Clan has no taste for fighting. Everyone, get down on your knees and listen to me! Third: In formal settings, please address me as... the Immortal Ancestor of the Shen Family!