There is no mix up boy, look at the map of kasmeer to know its boders. And if you want to stick to Hindi-Chini bahen-Bhai then yeah, these Chini-Bhais are pretty crafty to wrestle Akasi Chin in a heart beat, destroy bunkers and keep up incusions without India making a pigs squeak.
You are repeating '62 story about Aksai chin .... nothing new ... China had no role in Azad Kashmir ...
India China tension does not help Pakistan in any way ... they will not come to help in case of a conflict as they have shown in the past. So as i have said before if you are counting on Chinese or Amercain help to protect ... forget about it .... Pakistan has to learn to fight it's own battles .....