I don't know about two years, but I got a one-year multi-entry last October. The visa cost is now the same for single-entry, double-entry and multiple entry -- something to do with reciprocity due to U.S. visa policy. I've been to China many, many times, so I'm sure I'm on their, "No problem Gweilo" list. However, when I handed in the application, the clerk who processed it didn't even look twice -- just asked if I needed it the same day (I didn't), told me to come back the following day after noon and thanked me.