You can take bus No. 15 at Jiaxiu Tower and get off at Daximen, and then there is Shixi Road opposite. To take the bus to Huaxi, you can walk down Shixi Road to the station next to Hebin Park and take the bus to Huaxi or Qingyan. There are many cars everywhere. Shixi Road is just one stop away from Hebin Park, so you can just walk down.