It is a nice airport, but it takes a long time to ...

It is a nice airport, but it takes a long time to get from the main terminal to your gate. Allow the full 3 hours recommended as you may be surprised at the obstacles in your way.

For international flights returning home, do not forget your departure card! This is the paper you would have received when you arrived in China. Also before boarding your flight, I recommend buying a bunch of drinks at a machine at the gate as the price is low and can make for a more comfortable flight home.