A new-type Fuxing bullet train CR300AF, with a designed speed of 250 km per hour, set off from Guiyang to Liupanshui on Monday, which marked the debut of this type in the southwest China. (Photos: Xinhua)

A driver operates aboard CR300AF bullet train from Guiyang to Liupanshui, southwest China's Guizhou Province, Dec. 21, 2020.

A CR300AF bullet train departs from the Guiyang North Railway Station in Guiyang City, southwest China's Guizhou Province, Dec. 21, 2020.

Aerial photo taken on Dec. 21, 2020 shows a CR300AF bullet train operating in a train maintenance station in Guiyang City, southwest China's Guizhou Province.

Aerial photo taken on Dec. 21, 2020 shows a CR300AF bullet train operating in a train maintenance station in Guiyang City, southwest China's Guizhou Province.

A conductor works aboard CR300AF bullet train on Dec. 21, 2020.