Be careful when using this card. I just returned from Beijing and I can't get the money left in card including the deposit back. The officer said that it's because I havn't used the card when get off the car. Generally, with the downtown public bus in Beijing, you use the card only once when you get on the car. But for long-distance line you have to use it again when getting off. I guess that it's about my trip to the great wall with the 919 coach, but I see no one use the card when getting off the car. So this is a kind of trap, BEWARE!