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 difficult journey of punishing evil and promoting righteousness. Yuntian gains points by completing system tasks, uses the points to exchange for lifespan, and leads six disciples to take back the secret treasures and inheritance that belong to their clan step by step.

(Source: Tencent Comics, translated)