Movies need to be approved by
government bureaucrats.
Obviously for a historical flick, you would have the appropriate "enemy." But if you were to posit China going to war against a country in a fictional, modern day setting, the government might be concerned that this would reflect negatively on diplomatic relations. You do have internet amateurs making their own animated shorts depicting present-day military conflicts. The enemies are usually USA or Japan.
I suppose this is not just restricted to China. I remember in Transformers, they had a "North Korean aircraft carrier group." I guess if there is a bit of political correctness against fictional depiction of China as a military adversary, North Korea is a good stand-in or a euphemism.
Anyway, this movie turns out to be "a story of two outstanding military men competing for the position of division commander. They go through misunderstandings and life-threatening moments before finally coming to a common understanding. Eventually they pull together and complete the air force exercise perfectly."
When I realized this was about air force internal politics and had no military conflict setting, I turned it off immediately. Two thumbs down