History's Strongest Janitor: Sweeping the Globe

In 2049, Wang Zizai, a janitor at the Tiangong Tower, activates an ancient System and gains four identities: a timid old man mopping floors, a black-market pharmacist, the top name in dual cultivation, and the nation's legendary monk who sweeps floors. There's a champion in every walk of life. The whole world offers a bounty of ten trillion for him, while female cultivators line up just to be turned down. The greatest janitor in history sweeps across the globe.