This is a squat toilet. They are very common in China. This particular one was at the Panda Breeding in Center and was fairly clean (for a toilet). Most places we went would have only one Western-style toilet, in the handicap stall. (In preparation for the Beijing Olympics, bathrooms had to be equipped with handicap stalls.)
One of the recurring conversations everywhere we went was "Is there a Western toilet?" Eventually we all gave the squatties a try, whether through necessity or just because someone didn't feel like waiting for 10 people to use the one Western toilet.
The squatties are in a regular stall, and were actually kind of easy to use. But I won't go into detail about how. You can use your imagination.