Don't mix China and Pakistan ..... Azad Kashmir was never part of IOK ....... it was taken from the princely state of Jammu & Kashmir. That too when Indian army landed in Srinagar they kicked the Pakistani nationals all the way to Muzaffarabad !!!!
Since '47 India has taken back part of Kargil ('71) and Siachin Glacier ('83) .... Dont want to look at eastern part :D
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.