If US attacks mainland China, and 'devastate' mainland China, what do you think the 1000 nukes(estimated) are for? The moment US even dare drop a boot on Chinese mainland soil, the war changes to a world war. If the war is confined to Taiwan which is what will most probably happen, China will win. Don't forget Russia will nuke US if China gets nuked, and China will nuke US if Russia gets nuke. It is just common sense, and UK and France will also nuke Russia and China. Then my friend, we will be back to stone age, if India decides to join the fun, Pakistan will also join, the whole world gets nuked. Lolol