Shanghai–Kowloon through train

The Shanghai–Kowloon through train is an intercity railway service between Hung Hom station in Hong Kong and Shanghai railway station in China, jointly operated by the MTRC of Hong Kong and China's national rail service (Shanghai Railway Bureau). The numbers of this train service are Z99B (away from Shanghai) and Z100B (towards Shanghai). Services operate along the East Rail line in Hong Kong, crossing the boundary between Hong Kong and mainland China at Lo Wu/Luohu and then continuing along China's railway network via the Guangshen railway, Jingguang railway and the Hukun railway to Shanghai. The train runs every other day. The journey time is approximately 20 hours.

The direction sign of Shanghai–Kowloon through train, taken near Hung Hom station; the southern destination has been labelled as "Hong Kong Hung Hom" since April 2019

Shanghai–Kowloon through train at Shanghai railway station

The stops on the route are Guangzhou East, Zhuzhou, and Jinhuaxi stations. Only passengers taking Z99A/Z100A (Shanghai-Guangzhou East) can disembark at these stops.

Since 1 October 2003, passengers cannot disembark at the stops listed above, as all travellers to Hong Kong from Shanghai clear Chinese immigration and customs at Shanghai station, and once they have done so they are considered to have left Mainland China and are no longer permitted to leave the train until their arrival at Hung Hom station. The same rule also applies to northbound travellers who will clear Chinese immigration once they have arrived at Shanghai station.[1] 144-hour visa-free transit for passengers who are of selected nationalities are available since 30 January 2016.[2]

Due to the coronavirus pandemic, the service has been suspended indefinitely since 30 January 2020.