A worker works at the rotation construction site of a grand bridge of Menghua Railway in Nanyang City, central China's Henan Province, Aug. 14, 2018. The grand bridge over Nanjing-Xi'an railway completed a rotation construction on Tuesday. The 879-meter grand bridge under construction is a part of the Menghua Railway. As a national strategic coal transport route from North China to South China, Menghua Railway starts from Erdos in Inner Mongolia to Ji'an in Jiangxi province. (Photo:  Xinhua)

A worker works at the rotation construction site of a grand bridge of Menghua Railway in Nanyang City, central China's Henan Province, Aug. 14, 2018. The grand bridge over Nanjing-Xi'an railway completed a rotation construction on Tuesday. The 879-meter grand bridge under construction is a part of the Menghua Railway. As a national strategic coal transport route from North China to South China, Menghua Railway starts from Erdos in Inner Mongolia to Ji'an in Jiangxi province. (Photo: Xinhua)

Aerial photo taken on Aug. 14, 2018 shows a grand bridge of Menghua Railway after a rotation construction in Nanyang City, central China's Henan Province. The grand bridge over Nanjing-Xi'an railway completed a rotation construction on Tuesday. The 879-meter grand bridge under construction is a part of the Menghua Railway. As a national strategic coal transport route from North China to South China, Menghua Railway starts from Erdos in Inner Mongolia to Ji'an in Jiangxi province. (Photo: Xinhua)

Combo photos taken on Aug. 14, 2018 show the construction site of a grand bridge before (up) and after its rotation in Nanyang City, central China's Henan Province. The grand bridge over Nanjing-Xi'an railway completed a rotation construction on Tuesday. The 879-meter grand bridge under construction is a part of the Menghua Railway. As a national strategic coal transport route from North China to South China, Menghua Railway starts from Erdos in Inner Mongolia to Ji'an in Jiangxi province. (Photo: Xinhua)