Jin Di

　　During the Spring & Autumn and the Warring States periods (722-221BC), all the kingdoms in lower reaches of the Yellow River built banks along the river to protect lives and properties. After the Qin State united the ancient China in 221BC, it started to revamp all the banks. During the Han Dynasty (206BC-220AD), the banks were reinforced and began to be called Jin Di (Jin Bank).

　　Since the Song Dynasty (960-1279), the Yellow River has changed course for several times, forcing the people along the course to erect banks. And all the banks are called Jin Di.