Take a bus from Nanjing to Jiupu Town, Xuyi.

I can tell you a way: walk to Nanjing Central Gate Bus Station, take the Liuyu Line at Yuqiao Market (around 5 yuan), get off at Liuhe New Bus Station, transfer to Liuhe Sheng Da Bus Station (around 5 yuan), transfer to Chajian in Sheng Da (3 yuan) and get off at Chajian, then transfer to Chajian to Shiwan (2 yuan) and get off at that time. The whole journey takes about 2 hours. Now it's from Nanjing to Xuyi, 45 yuan, and Xuyi to 6 yuan, an old shop. The whole journey takes about 3.5 hours. It's a bit troublesome to take the bus, but it's a good way to save money and time!