Take subway line 3 and transfer to bus 765. According to Baidu map, you need to take Metro Line 3 and transfer to Bus No.765 from Shangmadun to Sam Supermarket, which is 5.6 kilometers long and takes 40 minutes to arrive. The specific route is as follows:

1. Walk 320 meters to Jinghai Station, take Metro Line 3, and take 2 stops to get off at Xufeng Station.

Secondly, walk 240 meters and get on the bus at Hongyuan Road (Changjiang North Road) Station, take bus No.765, and get off at Qianwei Road (Jiangxi Road) Station after 5 stops.

3. Finally, walk 360m to reach Sam Supermarket.