A photo taken on May 31, 2018 shows the first swivel bridge in Yangzhou, east China's Jiangsu province under construction. The bridge, which spans over the Nanjing-Qidong Railway, is one of the most important projects of the Lianyungang Highspeed Railway. [Photo: IC]

A photo taken on May 31, 2018 shows the first swivel bridge in Yangzhou, east China's Jiangsu province under construction. The bridge, which spans over the Nanjing-Qidong Railway, is one of the most important projects of the Lianyungang Highspeed Railway. [Photo: IC]

A photo taken on May 31, 2018 shows the first swivel bridge in Yangzhou, east China's Jiangsu province under construction. The bridge, which spans over the Nanjing-Qidong Railway, is one of the most important projects of the Lianyungang Highspeed Railway. [Photo: IC]

A photo taken on May 31, 2018 shows the first swivel bridge in Yangzhou, east China's Jiangsu province under construction. The bridge, which spans over the Nanjing-Qidong Railway, is one of the most important projects of the Lianyungang Highspeed Railway. [Photo: IC]