High-speed G-series trains link Shanghai Hongqiao and Xi'an North via key hubs such as Nanjing South, Xuzhou East, and Zhengzhou East. The fastest Fuxing services (CR400AF/BF) operate at up to 300–350 km/h (186–217 mph) and complete the trip in roughly 5 hours 45 minutes to about 6 hours 30 minutes with limited stops, sometimes including Luoyang Longmen. Other G trains, often using Hexie CRH380 sets, run at 300 km/h (186 mph) and take around 6 to 7 hours due to additional intermediate stops. G-series trains offer Second Class, First Class, and Business Class seating, with power outlets and a café-bar or trolley service onboard. As an alternative, conventional overnight services (Z/T-class) run between central Shanghai and Xi'an stations at lower speeds, typically 120–160 km/h (75–99 mph) on faster stretches, with total journey times of about 14–16 hours. These trains provide Hard/Soft Seat and Hard/Soft Sleeper options. For daytime travel focused on speed across the Shanghai–Nanjing–Xuzhou–Zhengzhou–Xi'an corridor, choose the G-series; for an overnight ride with berths, the Z/T sleepers are available.