Yuanlai Wo Shi Modao Lao Zu?

Yuntian, a master of his generation, is dying because of his exhausted lifespan. The eight sacred places that claim to be righteous know that Yuntian's death is coming and they all attack the mountain gate. At the critical moment, a time traveler with the same name and surname as Yuntian enters his body with his own system soul, starting a...