Which episode is the red box in A Two-way Street?

The TV series The Red Box is from the ninth episode.

According to Youku, in the ninth episode of A Two-way Street, a passenger named Liu Qiang took his fiancee to Jiangzhou. In order to help counterfeiters, Liu Qiang brought a red suitcase.

However, when packing, Liu Qiang's luggage was moved, which aroused the suspicion of conductor Rebecca. Rebecca reported the conductor Geng Beilin and the police, and Liu Qiang was taken to the dining car for examination. The police officers cooperated tacitly, put on makeup and fought bravely, and finally caught the mysterious figure who handed the box at the station.