开封是我国著名的古都,历史上有开封、大梁、浚仪、汴州、东京、祥符、南京、汴京、汴梁之称。战国时期魏惠王首先在这里建都,以后的后梁、后晋、后汉、后唐、北宋和金代的末期,也都以此地为都城。战国时,大梁城周达二十里以上,人口不下二十万。唐代,人 Kaifeng is a famous ancient capital in our country. In history, there are Kaifeng, Gulou, Junyi, Danzhou, Tokyo, Xiangfu, Nanjing, Bijing and Duanliang. During the Warring States Period, Wei Hui Wang first built here the capital, later Beiliang, Hou Jin, Hou Han, Hou Tang, Northern Song Dynasty and the end of the Jin Dynasty, are also here as the capital. During the Warring States Period, the Great Wall of the city reached more than twenty years, with a population of no less than two hundred thousand. Tang Dynasty, people