Beijing taxis are green ,blue ,or red color at top with yellow color at the bottom ,Taxis charge fee is ¥13 for the first 3Km , and an additional ¥2.3/km after the first 3 km.and All official taxis have license plates beginning with the letter "B", as in "京B". "Pirate Taxi cabs" may look like taxis but their license plates will start with other letters . Pirate cabs will charge you a higher fee for the journey, unless you are a good price -killer . in addition it is a good idea to ask taxi driver for a receipt (发票 fā piào) while you getting off the taxi ,in case you want to make a complaint later or for business reimbursement purposes, and since the receipt has the cab number, you will have a greater chance of getting your possessions back if you forget anything in the taxi.