How to take a bus from xihua university to Chengdu Jiaotong University Wal-Mart?

Take bus No.221and get off at the terminal (Ximen station). Cross the road and take bus No.56 and get off at Jiaotong University Road West Station. Recently, road construction is under way. I don't know if the No.56 bus is diverted at Ximen Station. There is another route: take bus No.221and get off at the east of Yingmenkou overpass; cross the street and take bus No.340 and get off at Qunxing Road West Station. Go back a few steps, cross the street and walk north along Jiaotong University Road, and you can reach Valma in a few minutes.