It varies from different trains. There are two passenger train stations in Hangzhou, south train station in Xiaoshan area and Hangzhou train station in the city center. In Shanghai, the trains stations are shanghai train station, south railway station and Hongqiao train station. In Nanjing, they are Nanjing train station, south train station and west railway station. For the exact train info. such as the train stopping at which train station, you could search on the page directly.