Yichuan County, Henan  Yichuan County () is a county in the west of Henan province, China. It is under the administration of the prefecture-level city of Luoyang. Yichuan is known as the "City of Wine". Chinese rice wine is claimed to have been invented here by Dukang during the reign of Shaokang of the Xia. Dukang wine is now exported to Japan, the United States, Canada, Thailand, and more than 45 other countries.