A woman arranges Chinese dates from Hotan in northwest China's Xinjiang Uygur Autonomous Region during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

A man views a type of wine during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

Exhibitors show a type of incense during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

People visit the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

An exhibitor from southeast China's Taiwan introduces calligraphy works during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

Models show traditional Chinese wedding dresses during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

An exhibitor from Pakistan shows a type of cosmetic case during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

An exhibitor arranges beeswaxes during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

Exhibitors show a type of incense during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)

An exhibitor(1st L) introduces potted vegetables during the 6th China Characteristic Commodity Expo Fair in Sanmenxia, central China's Henan Province, May 25, 2018. The expo fair, with the participation of more than 600 exhibitors from 18 countries and regions, kicked off here Friday. (Xinhua/Feng Dapeng)