High-speed G-series trains on the Shanghai to Huaihua route run on the Shanghai–Kunming High-Speed Railway (Hukun HSR), typically operated by Fuxing (CR400) and Hexie (CRH380) EMUs. These trains depart from Shanghai Hongqiao and arrive at Huaihua South, offering Second, First, and Business Class seating. They operate at up to 300 km/h (186 mph) and cover the journey in about 6 to 7 hours, with limited stops that may include Hangzhou East, Nanchang West, and Changsha South depending on the service number. In contrast, conventional Z/K overnight trains use the legacy Shanghai–Kunming line from Shanghai Railway Station to Huaihua (main station). These services offer Hard Seat, Hard Sleeper, and Soft Sleeper classes, cruise around 120–140 km/h (75–87 mph) with peaks up to 160 km/h (99 mph), and take roughly 16–20 hours due to more intermediate stops. Onboard, G-series trains provide reserved seating, power outlets, tray tables, clean restrooms, and a trolley or dining counter; Business Class features wide recliners in a quiet 1–2 layout. Conventional sleepers include bedding, hot water, and snack carts. Choose the G-series for the quickest daytime trip to Huaihua South, or the Z/K sleeper for an overnight ride to the city’s main station.