Though I am always up for maintaining a balanced approach by not picking sides and criticize Pakistan joining US camp, leaving USSR pissed, as a result when 71 happened Soviets kept patrolling Seas to make sure US does not join in, the ultimate loser was Pakistan. A lesson to be learned from this so that history does not repeat itself is to make sure Pakistan follows its own interests. I have to admit that due to CPEC and US heavy tilt towards India our stance would be pro China however as they say in International arena there are no permanent friends but only interests.
Having said that if push comes to shove than as stated earlier and for obvious reasons Pakistan will stand with China even if for no other reason than simply because we cannot afford another hostile neighbor and that too a super power. We made this mistake by ignoring USSR who was next door and joining US who had no connection to the region except for using our bases to spy on Soviet Union.
USA offered more money than USSR