1 / 4   An overhead monorail train has been put into trial operation in east China’s Qingdao City in Shandong Province. /CFP Photo

2 / 4   The train has a maximum speed of 70 kilometers per hour, the fastest of its kind in China. /CFP Photo

3 / 4   The train comes with either three or five coaches, with a passenger capacity of 300 and 510 people, respectively. /CFP Photo

4 / 4   At a price just one-third that of an underground subway, such trains can reduce the costs of building transportation infrastructure. /CFP Photo