I was a junior college student in 1987. I want to ask if I still have a chance to enter the military camp?

Sure, but you need an opportunity. In some places, there are troops that recruit people from colleges and universities every year, as long as their physical conditions and age meet. It's easy. I just don't know if there is a garrison in your city. Our school recruits a lot every year, including ground pilots, air force pilots and navy. Now there are naval defense students in our school, which is more relaxed. If I hadn't been two months older, I would have been an officer now, hehe! Remember, the age can't be different by one day, which is based on the day you sign up!