X trains (行包列车; Xingbao Lieche) in China Railways are the fastest cargo / goods trains in China. As the name suggests, they are for freight only and are not for passenger use.

The following train numbers are in use:

• X1 – X198: Express X cargo trains (160 km/h / 100 mph)
• X201 – X398, X401–X998, and X2401–X2998: Fast X cargo trains (120 km/h / 75 mph)

Trains X2401–X2998 run nationwide; trains X401–X998 are more regional cargo / goods services.