开封是我国著名的古都之一 ,早在五代时期 ,后梁、后晋、后汉、后周就以开封为都城。北宋时 ,都城仍设在开封 ,当时的开封叫作“汴京”。汴京南有蔡河沟通淮河中游 ,东有五丈河连接山东 ,西有金水河与洛阳相连 ,是水陆两路的交通枢纽。北宋时 ,汴京内外共有三重城池。最里面的 Kaifeng is one of the famous ancient capitals in our country. As early as the Five Dynasties period, Kaifeng was the capital after Kaoliang, Jin and Han. When the Northern Song Dynasty, the capital is still located in Kaifeng, Kaifeng was called “Bijing.” Qijing south of Caihe River Huaihe River, the east Wuchang River connecting Shandong, Jinshui River in the west and connected to Luoyang, is the transport hub of land and water. During the Northern Song Dynasty, there were a total of three cities inside and outside Beijing. The innermost