Why Is My Immortal Master So Cowardly?

Song Zhiyuan is the Supreme Emperor but only wants to live quietly, hiding his cultivation to retire at Qingyun Peak. The system forces him to take disciples, so he accepts three bizarre students: the reincarnated female emperor, a warrior with divine constitution, and a disciple cursed with bad luck. He teaches them to play low-key and pretend to be useless. When evil forces from beyond the realm target him, he is forced to act. Everyone at Qingyun Peak disguises themselves as rookies, successfully tricking the entire cultivation world.