Chen Minghui had been a modern-day courier, but fate played a joke on him and sent him back to the Republic of China era, into the body of a graduate of the fourth class of the Whampoa Military Academy. He had fought the Red Army, and with no other choice and no System to help him, he could only stick with the principal and see it through.
It was only when the Japanese invaded that he finally got the chance to fight them with everything he had. He took part in battle after battle until the Japanese surrendered, then eventually settled in Hong Kong.