Beijing Metro Subway
To avoid hassle of buying single journey ticket, buy Yikatong (One-Card Pass) instead. Show this Chinese character Yikatong一卡通(One-card pass) to the ticketing agent/officer when buying for your convenience.
Deposit is CYN 20 and load is CYN 20. The deposit is refundable at Line 13 or at Terminal 3 of the Airport Express. You can use the card for bus fares also.