How long does it take to get off at Tongji University Station on the subway 10 line and walk to Tongji University Teaching South Building? Is it close? Which exit should I turn to if possible? I haven't been there. It's really close. When you get out of the subway station, you can see the old school gate (East Gate) of Tongji University at any entrance, and then go in. You can see the image of Chairman Mao, and the image of you facing Mao. The building on your left is the South Building. When you get out of the station, it shouldn't take you more than 10 minutes to reach the south building.