Oh no the Chinese and the numbers game again?
Forces of the PLA:
Active; 1,700,000
Reserve; 800,000
Tanks: 7,500
APCs: 5,500
IFVs: 2,200
Arty: 25,000
... you know what they call 7,500 tanks in the Air Force?
Targets! 
The Soviets had 42,000 tanks in the 1980s and we figured it would be just about even with our 6,000 M1 Abrams.
Unless we decide to invade mainland China or fail to establish air superiority we can handle the Chinese in just about any offensive operation they could conduct regionally. And forget about cross ocean attacks, that belongs in WWII. We got OTH radars on both coasts that will see surface group long before it reaches US shores.
Now short of them sending some ICBMs in to down town San Fransisco we don't have to worry too much about China hitting us at home (even if they tried that its not a sure thing). The reverse is not true, they are rightly concerned that we got CSGs lurking in the Yellow Sea. They know if it hits the fan those planes could easily hit their capital with bombs that burn sand to glass.