Which bus should I take from Shuangliu Park in Jiaolonggang, Chengdu to Southwest Food City?

Bus route: 820 → 840 → 335, the whole journey is about15.2km..

1. Walk about 220 meters from Shuangliu Park in Chengdu Jiaolong Port to Jiaolong Port Water Supply Center Station.

2. Take bus No.820, pass 5 stops and arrive at Baiwan Road intersection station.

3. Take bus No.840, pass 17 station, and arrive at Wuxing No.4 Station of Xisi Road in Wu Ke.

4. Walk about 30 meters to Wu Ke Xisi Road Station.

5. Take bus No.335, cross the station 10, and arrive at the first section of the West Third Ring Road.

6. Walk about 230 meters to the Southwest Food City.