What Should I Do? Even the Celestial Emperor Thinks I'm at the Same Cultivation Level As Him

In his fortieth year as the master of a celestial sect, Li Zhoujun finally obtained a system that allowed him to go toe-to-toe with anyone. \nAre you a reclusive, ancient monster? \nI'll go toe-to-toe with you. \nAre you a peerless, unparalleled immortal emperor? \nI'll go toe-to-toe with you. \nAre you a fearsome demon? \nI'll go toe-to-toe with you. [Spring Breeze, Be Happy] Protagonist: Li Zhoujun