Is it? Honest question, I don't remember any China-led interventions, but I can't say that there were none. The US-led wars got a wide coverage, especially in NATO countries which were dragged into them, and the public was focused on them, so I can 100% believe that there were some underreported Chinese actions.

China has a history of invading its neighbors, and was the main disseminator of communism SE Asia, while the URSS focused more on the SW.

Which post ww2 invasion has China done? Granted, like the USA they've been involved as backers in places like Vietnam - but there's a difference between giving support, and invading?

Let's not forget that the US has a history of things like, training, supporting ho chi Minh - only to end up fighting a war against him. Training, supporting Mujahideen - only to end up fighting a war. Supporting Saddam Hussein, only to fight a war. Training, supporting contras and similar forces in Latin America - and is now fighting a shooting war on drugs in these countries...

[ed: as mentioned in a sibling comment - China intervened with troops in Korea - my apologies - I'm afraid the Vietnam War and later conflicts are more fresh in my mind.

https://history.army.mil/brochures/kw-chinter/chinter.htm ]