Crossing North Korea, I became a US soldier, and my opponent was my grandfather.

Qiao Youzhi's grandfather Qiao Fanshen was a god of war in the Chinese army. Qiao Youzhi didn't want to follow the path planned by his grandfather, so he went out in a rage in the heavy rain. He traveled to the battlefield of aiding Korea amid thunder and lightning, and after waking up, he found that the grandson of the Chinese army had become the American army. Qiao Youzhi tried to change history, but was beaten into a grandson and captured by his grandfather. He finally faced reality and became a grandson in the battlefield of the North Korea and a grandfather in Dongjing. The American army, as an occupying force, was of course the grandfather. ...