Reborn into a Family of Cultivators in the City

(Rebirth of the first aristocratic family in China + invincible writing + decisive killing + multiple female protagonists) A demon ancestor was reborn in the city, Tiandao, get out of here. After robbing Tiandao of a hundred rays of Hongmeng Qi, he accidentally broke into a cave with the demon god Rahu sealed inside. Either you sign a master-servant contract with me! Be my thug, or your soul will fly away............. In the previous life, Ye Tian was the Demon Ancestor of the Great World. Just after he was about to unify the world, he was pierced through the heart by a sword from his apprentice who he regarded as his own son. I will take you very seriously! Treat it as your own! Why is this?