My Master Sent Me Down to the Mortal Realm to Survive a Tribulation

(Urban fantasy, cultivation, System, satisfying payback, alternate setting, no romance) [He was once a nobody on Wood Spirit Star, and a rather unlucky nobody at that. How unlucky? There are too many tears to tell. Going to the bathroom? The toilet paper falls in. Taking an exam? His pen breaks. Drinking water? He nearly chokes to death. Walking down the street? Either a flowerpot falls from upstairs or he accidentally falls into a sewer. At eighteen or nineteen, he finally got a girlfriend, only for someone else to steal her away... Maybe when a person reaches the absolute limit of bad luck, things are bound to turn around...]