Fair question. I can say that they are not squeamish about losing men, the US is though. I don't really know of any actual ground troop battles the US has fought since Vietnam either. The US has focused on air superiority and bombing since the 1980s.
The US just never sends in ground troops because of the horrors of Vietnam where we lost thousands of young men.
So yes, the US does have real experience these past decades but primarily war at a distance. That's still valuable in a conflict and I agree China does not have that experience but it's a small advantage to base a war on.