Your original article and your new edition are both correct. The completed bullet train line in January 2018 from Chongqing to Kunming is via Chongqing-Guiyang bullet train line of 200 km/h speed. The one to be started in 2018 is a direct Chongqing-Kunming bullet train line of 350 km/h speed. The Chongqing-Guiyang-Kunming bullet train line takes about 4 hours, and the Chongqing-Kunming direct one takes about 2 hours. The Chongqing-Guiyang bullet line is not the only bullet train line between these two cities, a new 350 km/h Chongqing-Guiyang bullet train is also planned. Chongqing is the center Chinese city with the highest density bullet train lines planned in China.