OK Sport. Do just a bit of research and look at the gross disparity between Chinese and US airlift capability. I think even you will be surprised.
Also, the invasion you spoke of was actually a border conflict wherein the Chinese advanced approx. 30 km into Vietnam in order to pressure Vietnam to abandon it's invasion of Cambodia (Which succeeded in toppling the Khmer Rouge).
I know you Austin guys are supposed to be the smartest guys in the room but c'mon.