July 7, 2007 to September 30, 2009 as Chengdu-Chongqing North (Chengdu-Chongqing North) Intercity Express Train, running through the Reach Railway, Sui-Yu Railway, the maximum operating speed was reduced to 160 km / h. The four-movement, two-drag car design maximum value of 200 km, the whole train set of six sections of first-class soft seat car 1, second-class soft seat car. The car four moving two drag, design maximum value of 200 kilometers, in Chengdu-Suizhou-Chongqing line according to 160 kilometers of operation, the whole train grouping of six sections, a first-class soft-seat car 1, the second-class soft-seat car 5 people, a fixed capacity of 424 people, the car for the T head of the tube of the express train. At present, the pioneer has been withdrawn from the Chengdu-Chongqing line intercity train operation, and its status was newly assigned to the Chongqing North Passenger Transportation Section of the CRH1-type train set instead. 2010 May with Guiyang Vehicle Section (into the Bureau of Guiyuan), running Guiyang - Dushan, Guiyang - Duyun, May 26, known as "Guizhou's first speed "Pioneer" fast train, in Guiyang to Duyun smooth round trip between the opening, the speed from the original 60-80 km / h, increased to 120 km / h or more, marking the Guizhou mountain railroad from the "general speed
Morning, the Guizhou mountain railway from the "general speed" into the "fast" stage.
At 8:27 a.m., the "Pioneer" fast train on time from Guiyang Railway Station smoothly speed, leaving Guiyang, the maximum speed of 140 km / h. At 9:20 a.m., the train arrived at Duyun Railway Station, the running time of only 53 minutes, 4 minutes earlier than the expected running time.
At 10:06 a.m., the "Pioneer" fast train returned from Duyun Railway Station and arrived at Guiyang Railway Station at 11:00 a.m., with a running time of 54 minutes. Chengdu Railway Bureau Guiyang Passenger Transportation Section of the Party Office Director Xiao Fan introduced, "Pioneer" fast train after the start, will drive along the route and around the catering, tourism, retail, business, real estate and many other industries.
October 2010, the Pioneer returned to Nanjing Puzhen Vehicle Factory overhaul, but returned to Nanjing Puzhen Vehicle Factory has been out of service, the reason is unknown. Guiyang to Duyun intercity train currently running by the "Blue Arrow" train set operation.