High-speed (G) services operate from Hong Kong West Kowloon to Beijing West using China’s newest high-speed trainsets (Fuxing/CR-series). These G-series trains run on the Guangzhou–Shenzhen–Hong Kong Express Rail Link and the Beijing–Guangzhou high-speed corridor, reaching line speeds of up to 350 km/h (217 mph) and typically complete the trip in roughly 8.5–10.5 hours depending on the specific service and number of intermediate stops. Onboard classes include Business, First and Second class seats; trains commonly feature reclining seats, power outlets, luggage racks and onboard toilets. • High-speed (G) train: runs West Kowloon (Hong Kong) ⇄ Beijing West via Guangzhou and other major hubs. Top operating speeds up to 350 km/h (217 mph); typical journey time about 8.5–10.5 hours. Seating: Business, First, Second class. Passport and Mainland immigration checks are handled at West Kowloon prior to departure (co-location). • Overnight conventional sleeper services (Z/T or numbered conventional trains): older conventional services operate between Hong Kong (Hung Hom) and Beijing West on traditional lines. These trains travel at lower speeds, generally in the 120–160 km/h (75–99 mph) range, and take about 24–28 hours depending on the schedule. Sleeping options include soft sleeper and hard sleeper berths and soft/hard seats on some trains. Travel notes: G-series trains require seat reservations; luggage space is limited compared with long-distance sleepers. The high-speed option is the fastest rail connection; the overnight sleepers provide couchette-style accommodation for passengers who prefer to travel overnight.