Master, He Is Too Protective of His Shortcomings.

Lu Xuan traveled through time and space into a fantasy world where spiritual energy was exhausted. The protagonists of other people's families are all lucky, with golden fingers, grandpas, and various plug-ins, pushing them all the way! But what about Lu Xuan's turn? He actually became a grandfather himself? The task of the system is to let him accept apprentices. Okay, just accept it, now Lu Xuan realizes that something is wrong with these disciples of his? Why do they seem to be all villains? (Accepting a disciple, cultivating one. If you are not a Holy Mother, you will not be a teacher.)