What would happen if USA and China went to war..?

Lets say for some reason these two countries went to war with no other countries lending a hand to either side not even food. What are some ways it will turn out with a full blown war not just a few missiles be thrown here and there. Technology vs man power with the war taking place on both lands not just in one country. How much damage would be done, could either nation survive. Please give a few scenarios not just "this country will kick that countries ***".