I don't think there's a way for the drill instructors to not be at fault in this story.
Unless, for instance, the authority of the military really does supersede that of the teaching staff of a teaching institution with respect to enrolled students of that institution. Arguably then when the teacher intervened, he would have been undermining the educational and spiritual role of the invited trainers. And when the students first mobbed the playfully tiffing instructor, they would have been in the wrong too, and all of them should have been disciplined. The invited trainers derive their legitimacy from whatever mandated their presence in the first place, and as far as I know, that was the government, the one party.
The (hopefully different) instructors are due here in a few days. In times past I've seen them providing what looked like salutary instruction to the freshmen. They make them march, get coherent, possibly soak up some values, and sing. They make the atmosphere a bit more antagonistic for me, hit on without actually hitting a few girls, possibly score, then leave. The students ditch their uniforms and suddenly look older. Class begins.
There's probably no chance the students don't know the Longshan story by now. I don't know what's going to happen. If the instructors that turn up here are worth anything, they'll know how to tell that story the right way and the students will end up knowing something worth knowing. There might even be a propaganda victory in it. But the dudes who made the violence come true in the first place.... they, I think, remain dicks.