Passenger loco DF4D 3221 had just detached from train N397/398/351/352. 

The DF4D passenger locos with serial number beginning with 3, i.e. 3xxx, are also known as DF4DK, they are quasi-high speed diesels with a maximum speed of 170 km/h. Notice the slight difference in design from conventional passenger DF4D.

Kaifeng Railway Station

Photo by Chunlu Sun (chunlusun@yahoo.co.uk)