It is kind of similar to the rest of the 4,000+ Km border we have with them.... disputed. Our Army forms a human chain and so does theirs. There are some "sensitive zones" marked by our silly government so as not to "upset" the Chinese where Indian army is not allowed to patrol. It is near the no man's land.
I get disgusted with such rules. But alas, we have a corrupt, weak and enemy-pleasing political structure