Goods are unloaded from an European airplane at Xinzheng International Airport in Zhengzhou City, capital of central China's Henan Province, Dec. 7, 2017. The Belt and Road Initiative has made the inland Henan Province an emerging frontier of international trade. Taking advantage of the China-Europe freight trains and Xinzheng International Airport, which has ranked the world's top 50 with its cargo throughput, Henan province has transported commodities to over 180 countries. [Photo/Xinhua]

A worker drives a forklift at Xinzheng International Airport in Zhengzhou City, capital of central China's Henan Province, Dec. 7, 2017. The Belt and Road Initiative has made the inland Henan Province an emerging frontier of international trade. Taking advantage of the China-Europe freight trains and Xinzheng International Airport, which has ranked the world's top 50 with its cargo throughput, Henan province has transported commodities to over 180 countries. [Photo/Xinhua]

Workers assemble smartphones at a smart terminal industrial park in Zhengzhou City, capital of central China's Henan Province, Dec. 7, 2017. The Belt and Road Initiative has made the inland Henan Province an emerging frontier of international trade. Taking advantage of the China-Europe freight trains and Xinzheng International Airport, which has ranked the world's top 50 with its cargo throughput, Henan province has transported commodities to over 180 countries. [Photo/Xinhua]

A China-Europe freight train departs the station in Zhengzhou City, capital of central China's Henan Province, Aug. 2, 2017. The Belt and Road Initiative has made the inland Henan Province an emerging frontier of international trade. Taking advantage of the China-Europe freight trains and Xinzheng International Airport, which has ranked the world's top 50 with its cargo throughput, Henan province has transported commodities to over 180 countries. [Photo/Xinhua]

Containers are loaded onto a China-Europe freight train in Zhengzhou City, capital of central China's Henan Province, Aug. 2, 2017. The Belt and Road Initiative has made the inland Henan Province an emerging frontier of international trade. Taking advantage of the China-Europe freight trains and Xinzheng International Airport, which has ranked the world's top 50 with its cargo throughput, Henan province has transported commodities to over 180 countries. [Photo/Xinhua]

Worker sorts packages at the Henan Bonded Logistics Center in Zhengzhou City, capital of central China's Henan Province, Dec. 8, 2017. The Belt and Road Initiative has made the inland Henan Province an emerging frontier of international trade. Taking advantage of the China-Europe freight trains and Xinzheng International Airport, which has ranked the world's top 50 with its cargo throughput, Henan province has transported commodities to over 180 countries. [Photo/Xinhua]

People shop at a bonded commodity shopping center in Zhengzhou City, capital of central China's Henan Province, Dec. 8, 2017. The Belt and Road Initiative has made the inland Henan Province an emerging frontier of international trade. Taking advantage of the China-Europe freight trains and Xinzheng International Airport, which has ranked the world's top 50 with its cargo throughput, Henan province has transported commodities to over 180 countries. [Photo/Xinhua]