This Master Is OP but Chooses to Lay Low

Adrian Grant is bound to a Check-in System that has been paying out for ten years, and by the end of that decade he has reached the top of the emperor rank. He keeps it hidden. To the sect he is the peak master of Purple Bamboo Peak, a Core Formation cultivator of no particular standing, which is how he wants to be read. What he does openly is hand out Enlightenment Tea and Ninefold Golden Elixirs to the disciples under him, and the disciples become war gods and the elders around him become masters. Then Arcadia Province goes to war, and he settles it with a flick of his fingers, and the cultivation world learns what he has.