Aerial photo taken on Dec 18, 2016 shows a highway over water in Xingshan county, Hubei province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport.[Photo/Xinhua]

Photo taken on Aug 17, 2017 shows the Parrot Island Yangtze River Bridge in Wuhan city, Hubei province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport. [Photo/Xinhua]

Aerial photo taken on Dec. 8, 2016 shows the Tianxing Island Bridge in Wuhan city, Hubei province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport.[Photo/Xinhua]

Aerial photo taken on Sept 8, 2017 shows an expressway in Changzhi city, Shanxi province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport.[Photo/Xinhua]

Aerial photo taken on May 10, 2017 shows the scenery of the Xiangjiang River in Changsha, capital of Hunan province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport. [Photo/Xinhua]

Aerial photo taken on April 7, 2017 shows overpasses in Taiyuan city, capital of Shanxi province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport. [Photo/Xinhua]

Photo taken on May 11, 2017 shows the Sino-Europe freight train departing in Wuhan city, Hubei province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport.[Photo/Xinhua]

Aerial photo taken on May 9, 2017 shows a pier in Jiujiang, Jiangxi province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport. [Photo/Xinhua]

Aerial photo taken on Sept 2, 2017 shows the Zhengzhou East Railway Station in Zhengzhou, capital of Henan province. Six Chinese provinces in central areas — Henan, Shanxi, Hubei, Anhui, Hunan and Jiangxi, have rich land and agricultural resources, a large population, and are developing fast as hubs of modern manufacturing and transport. [Photo/Xinhua]