This is the kind of things that recruiter won't tell you but universally does once in.These drills have 0 practical use. I don't know why China keeps doing these kinds of training.
Or perhaps because the Sino-India "skirmishes" has been knuckles-and-legs-and-stick-and-shield affair, even during the tense period of the last 12 month, you think that the basic craft can be ignored?
Who could guarantee that it won't go hot this afternoon because Modi need to have the ratings up by 10%+?
Or who could guarantee that Sleepy Joe decided that "US need to go all the way" to make China yield?
Even with all the fancy gear, it's always up to the infantrymen to carry the final yards and finish the job.