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In the history of China, Kaifeng was once called the Girder, the Capital of Song Dynasty, the East Capital, Tokyo, Bianjing and so on. The city has been built for more than 3000 years. During the Warring States Period, Wei State was also called Liang State, and Hou Liang, the Later Jin Dynasty, the Later Han Dynasty, the Later Zhou Dynasty, the Northern Song Dynasty and the Jin Dynasty established their capitals in Kaifeng, so it was called the "Old Capital of the Seven Dynasties". Kaifeng, together with Luoyang, Anyang, Xi, Beijing, Nanjing and Hangzhou, is known as the seven ancient capitals of China and enjoys a high reputation at home and abroad.