tethering feature,  At the same time, these two lines are important rail transit routes for Beijing urban sub-center traffic. In the rail transit backbone network, a corridor between Universal Studios, the urban sub-center and the central urban area will be built to drive the development and construction of functional areas along the line. The passenger flow along the line 7 and south to the sub center does not need to go through the north-south line to line 6 and the eight-pass line to the sub center, which greatly improves the efficiency of reaching the sub center.

tethering feature