High-speed G-series services link Shanghai and Xining with modern EMUs such as Fuxing sets on the busiest eastern sections. The fastest same-day itineraries usually involve one change at Xi’an North or Lanzhou West and take about 9.5–10.5 hours end to end. Speeds reach up to 300–350 km/h (186–217 mph) between Shanghai Hongqiao and the central plains via key hubs like Nanjing South, Xuzhou East, and Zhengzhou East. West of Zhengzhou/Xi’an, trains run at up to around 250 km/h (155 mph) toward Lanzhou, and the final Lanzhou–Xining intercity segment also operates up to 250 km/h (155 mph). Seating on G-series trains includes Second Class, First Class, and Business Class, with wide seats, power outlets, and trolley-service refreshments. Conventional overnight Z/T/K trains also run between Shanghai (often from Shanghai or Shanghai South) and Xining, covering the journey in roughly 21–24 hours. These services top out around 120–160 km/h (75–99 mph) and offer Hard Seat, Hard Sleeper, and Soft Sleeper classes, providing lie-flat berths for a full-night ride. Travelers choosing high-speed services gain the shortest daytime travel time across Jiangsu, Anhui, Henan, Shaanxi, and Gansu before ascending to Qinghai, while the overnight option consolidates transport and lodging into one trip. If aiming for the quickest arrival in Xining the same day, pick the G-series itinerary with a change at Xi’an North or Lanzhou West; for a rail sleeper experience, select a Z/T/K night train.