I am planning a Guangzhou to Guilin high speed rail trip with my seven-year-old child. I can book my own ticket with a foreign passport in the railway app, but the child ticket screen asks for identity details and I am not sure whether the fare rule is based on age, height, or passport document type.
What I tried: I checked the app, Trip.com, and the station service hotline. The hotline said children with foreign passports can travel, but I should bring the original passport and arrive early for manual checks. The app still feels confusing because it shows several passenger categories.
Has anyone booked this recently in 2026? I want to avoid buying the wrong ticket and getting stuck at the gate.