Yishui County, Shandong Province. Dioscorea zingiberensis in Yishui County, Linyi City, Shandong Province is the most famous local specialty in Linyi, Shandong Province. It grows Dioscorea zingiberensis with excellent tradition and is a large distribution center for ginger sales in Yimeng Mountain area. Yishui County belongs to Linyi City, Shandong Province. It is the northern sub-center of Linyi City and an ecological landscape city. Located in the south-central part of Shandong Province, in the hinterland of Yimeng Mountain, in the upper reaches of yi river and Shuhe River. Juxian county in the east, Yiyuan and Mengyin in the west, Yinan in the south and Anqiu and Linqu in the north. With a total area of 2434.8 square kilometers, it ranks second among the county-level administrative divisions in the province.