Walk to the Heping Gate East Station to take Bus 673. Transfer to Bus 405 at Hujialou North Station, then get off at Dashanzilu South Station. Walk to the 798 art zone. It will take you 1.5 hours in total by bus. While it will take you 45 min and 49 RMB to take a taxi from the Liulichang Street to the 798 Art Zone.