Line four and line two. According to Baidu map, it takes 4.5 kilometers and 32 minutes to get to Chang 'an Hospital from Wenjing Road in Xi City by subway lines 2 and 4. The specific route is as follows:

1. First get on the bus at Wenjing Road Station, and take Metro Line 4 (in the direction of Aerospace New Town) and get off at the Administrative Center Station.

2. Secondly, get on the bus at the administrative center station, take Metro Line 2 (in the direction of Changning Palace) and get off at Fengcheng No.5 Road Station (exit of Metro Channel B).

3. Finally, get on the bus at No.5 Fengcheng Road Station on Weiyang Road and take bus 15 1 and get off at Chang 'an Hospital Station.