Son-In-Law of Ancient Martial Arts Doctor

[Story plot] The mysterious old Taoist priest kept Wang Tao captive in the mountains for twenty years. He boasted that he was the son of good luck and sold him to a big family at a low price as his son-in-law. The big family had no heirs and the yin was rising and the yang was declining. The old head of the family cried out that he had been deceived and wanted to retire. The cold female CEO and even the servants in the family looked down upon this son-in-law who came from the mountains. Just as he was about to be kicked out of the family, a powerful enemy came to the door. Wang Tao, who was lying flat in the big family and abided by his bet, found that he couldn't hold on any longer... "That's it!? Medical Saint? Martial Saint? Sword Saint? Sword Saint? What other saints and goddesses are there? Are you very powerful?"