It seems like many Pakistanis are unable to grasp the reality of the US-China relationship. China holds ~$2 trillion of currency reserves, out of a GDP of ~$4 trillion. That's 50% of the value of their GDP.
The US GDP, on the other hand, is ~14 trillion. If China starts acting tough tomorrow, all the US has to do is start printing more money. That would make the value of the US$ fall, and guess who would be the hardest hit country? The US? Lol, no, it would be China.
The value of their economy and currency would tumble overnight, and guess what, $4 trillion is closer to 0 than $14 trillion is.
The situation is more akin to a small bank in which Bill Gates has a chequing account. If the value of Bill Gates' personal worth falls, it may hurt him a little, but it would definitely sink the bank!