High‑speed Fuxing G‑series trains (CR400 variants) run most of the Shanghai to Huaxun corridor from Shanghai Hongqiao on dedicated high‑speed lines, reaching 300–350 km/h (186–217 mph) between key hubs such as Nanjing South and Xuzhou East. Depending on routing, some services continue as D‑series at 200–250 km/h (124–155 mph) or transition to conventional track for the final approach to Huaxun, where speeds drop to around 120–160 km/h (75–99 mph). End‑to‑end times typically range from about 4.5 to 6.5 hours. On the high‑speed segment, seats are sold in Second, First, and Business Class, with reserved seating, power outlets, and a trolley for drinks and snacks. By comparison, classic Z/K trains from Shanghai (main) station cover the route entirely on legacy lines at 120–160 km/h (75–99 mph). They make more intermediate stops and are usually scheduled as overnight services, taking roughly 9–12 hours overall. These trains offer Hard Seat, Hard Sleeper, and Soft Sleeper options, with simpler onboard facilities. For the quickest arrival with fewer stops via Nanjing South and Xuzhou East, choose a G‑series high‑speed train; for an overnight berth and broader access to regional stations, the Z/K service is the alternative.