What bus should I take from Hujiafa, Taihu Lake, Tongzhou, Beijing to Mazhuqiao Job Fair?

The whole journey is about 1 hour, 28 minutes/15.6km/ 17 station/direct starting point is about 2 1 18m, starting from the villagers' committee of Hujiafa Village, Taihu Town, Tongzhou District. Walk to Jiangchang Village to start the details, walk 50 meters, turn left and walk 0.6 kilometers west, then turn right and go north, walk 0.08 meters along Hekou Road ... via 17 stop, take Tong 12, get off at Xidian Huandao for about11m, and walk to Ma Ju. Terminal of Ma Ju Bridge