I have a supermarket system during the war

He Weiguo, who was brought to a parallel world by a supermarket system, found that the war had already begun. The weapons and ammunition sold in the supermarket were not only for the first and second wars, but also for the decades to come. If one wanted to buy these weapons and ammunition, they would have to pay points. The main way to obtain points was to kill the Japanese. The higher the level of the Japanese, the higher the points they would receive.