OMG! The "Fool" is A Real Badass!

The master of the Ye family has died suddenly. His wife Liu Feiyan, whose cultivation has been falling off, is left to face the Cai family, who come to threaten and humiliate her. The one who puts himself between them is Ye Tianci, called Silly Cow by everyone. Liu Feiyan picked him up six years ago and has raised him as an adopted son. He is slow in the head, and he was born with a pure Yang body and divine strength. He fights for her with his life, and he agrees to cultivate a divine art together with her so that her power can come back. When the dual cultivation is finished, Liu Feiyan's power is back, and Silly Cow is no longer silly. He has also become the new master of the Prisoner of Heaven Tower. He sets about repairing his damaged meridians and starts moving up through the cultivation ranks at speed.