As long as you are going to stick to the big cities, your ATM should work fine at the larger Chinese banks. The top 5 banks in China are: Bank of China, Industrial and Commercial Bank of China, Agricultural Bank of China, China Construction Bank and Bank of Communications. Many of these now have western investors and are held to a much higher level of standards then the smaller Chinese banks. Stick to these and you should be all set. Alternatively, they should also be able to convert traveler's checks or cash for you.
"Those who would give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety." Ben Franklin
"The plural of anecdote is not data"