Passengers and train attendants in traditional Mongolian costumes pose for a photo in front of a Metro train in Hohhot, capital of North China’s Inner Mongolia Autonomous Region, yesterday. The region opened its first-ever subway line in Hohhot, which has 20 stations and offers service to the four urban districts of the city with a maximum capacity of 2,062 passengers. China has more than 30 cities with operational metro systems and that figure is projected to reach 50 by 2020.China News Service