Time Travel: I Get the System by Chance, and It's Fun All the Way to the End

After the protagonist experienced unemployment, his girlfriend broke up and got married, he was knocked into a river by a car, and survived a disaster, he got a system that made him happy all the way to the end. He used the system's functions to create the strongest new entertainment star. He traveled through various dimensions, went to the Ming Dynasty to see thousands of horses galloping, the majesty of the Forbidden City, fought with Ultraman, played a friendly tennis match with the Prince of Tennis, and entered an alien planet to fight monsters to earn points. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.