I was convicted of war crimes for farming in Africa?

A discharged soldier went to Africa just to farm and sell vegetables, but unexpectedly got captured and became a hostage, about to be dragged out and shot? Don't panic!! At this critical moment, he awakens the "Chinese War God System," completing missions to obtain incredible rewards, and from then on, he rises to power. On the farm, I'm just a vegetable grower; call me Boss Chen, I don't mind. Outside the farm, call me "King of Africa."