because US could not defeat North Korea in a land war courtesy of neverending Chinese troops. neither could US defeat Vietnam courtesy of neverending Chinese troops.

Kissinger realized that and so he traded away US factories, to avoid confrontation with Chinese military, on the idiot idea that giving US manufacturing base to China is somehow gonna turn them democratic. well 50 years later, tough sht Sherlock

In a land war, man power is everything.

still China has become a paper dragon. their entire military is 1.3 mil. thats not that much and if they try to invade Taiwan with 300k-500k men, its gonna be the biggest fail since KamiKaze