Gao Chang and Rhubarb

As Gao Chang was dying, he was full of guilt and regret for having abandoned his dog. After Gao Chang got the chance to relive his life, he decided that this time he would take care of his dog Rhubarb, only to then discover that Rhubarb was the descendant of celestial canines! What kind of perks come with being buddies with a divine dog? Cultivation, naturally. But Rhubarb says that his people's cultivation methods were not to be taught to outsiders, and if Gao Chang wanted to learn, then they would first have to get married.