I stay in Shangri -la hotel, should I take a taxi or subway to the Beijing zoo?

You don’t need to take the subway or taxi, and there are many direct buses near the hotel. You can walk about 3 minutes to the North Zishuqiao and take the bus No.534 and get off at East Baishiqiao. Then walk about 5 minutes to the zoo. The whole ride just needs about 25 minutes.