Lankao county, Kaifeng City, Henan Province, has a license plate number of Yu B, an administrative level of county, a population of about 790,000, a population density of 708 people/km, an area of about116 km2, and a postal code of 475,000.

Introduction: Zip code: 475300, code: 4 10225, area code: 0378, Pinyin: lankao county Old Town has a long history. The old city was built in the first year of Zheng Da in Jin Dynasty, on the site of Sui and Tang Dynasties, and it is also the core material carrier of Luoyang's urban cultural heritage. Luoyi Ancient City, Paradise, Tang Ming, Ancient City Block, Lijingmen, Zhougong Temple, Jiulongding and other cultural landmark gathering areas. There are 68 cultural relics, 7 national cultural relics protection units, 9 provincial cultural relics protection units and 2 national intangible cultural heritage.