Urban Fantasy System

(Written during my cringey chuuni phase. Don't read it.)

One day, Chu Wangxian transmigrated to a parallel-world version of China and obtained a System: a troublemaking System. It made him stir up trouble to get stronger? The bigger the trouble, the stronger the System?

An ancient civilization emerges! Cultivation spreads across the world!

What? Practicing a specific technique lets you transform into Ultraman? What? Aliens are invading Earth? What? This isn't my first time using this System? What? Tokisaki Kurumi is also a System user?

Who exactly is Chu Wangxian? What is Xiaoyu's true identity?