Dachengqi Cai You Nixi Xitong

Jiang Li, after crossing over, discovered that he possessed no special abilities, so he had no choice but to diligently cultivate. Five hundred years later, he finally became the strongest man in the Nine Provinces. Suddenly, a System appeared, offering to help him to go from a beginning cultivator to becoming the strongest in the Nine Provinces.

Jiang Li stared incredulously at the System's first mission: “Defeat your cousin (sixth-level cultivator).”

“This System is running a little late, isn't it?”

(Source: Tencent Comics, translated)