According to hebei academy of agriculture and forestry. Yixian Agricultural Demonstration Base is located in Nanbaiquan Village, Lianggezhuang Town, Yixian County, Baoding City, Hebei Province. The demonstration and promotion of Baiquan Ecological Park covers an area of * * * 3,800 mu, covering four administrative villages around Xia Ling, Nanshimen, Beibaiquan and Taihezhuang, with an area of about 1 10,000 mu.