Six articles. According to the tunnel network, as of August 25, 2023, there were 6 river-crossing tunnels in Xiaoshan Science and Technology City. Xiaoshan District, belonging to Hangzhou City, Zhejiang Province, is located in the north of Zhejiang Province, on the south bank of Qiantang River, adjacent to Keqiao District of Shaoxing City in the east, Zhuji City in the south and Fuyang District in the west.