There is no direct bus. If you insist on taking bus 109, you must get off at the City Hall Station. Kunshan City Hall is just on the way forward. You can get off at this stop in front of the Science Museum opposite the City Hall. At the bus stop, take bus No. 25 or Kunshan 106 and go through 6 stops (Jinpu Bridge-Oriental International Plaza-Lingming Qingjing-Zongrenqing Memorial Hospital-Huangpujiang Road Changjiang Road-Housing Provident Fund Center), that is, six stops Arrive at the Housing Provident Fund Center Building.