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In page Nanjing:

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In 210 BC, the First Emperor of Qin visited the east and changed Jinling City to Moling (秣陵). The area was successively part of Kuaiji, Zhang and Danyang prefectures in Qin and Han dynasty, and part of Yangzhou region which was established as the nation's 13 supervisory and administrative regions in the 5th year of Yuanfeng in Han dynasty (106 BC).[citation needed] Nanjing was later the capital city of Danyang Prefecture, and had been the capital city of Yangzhou for about 400 years from late Han to early Tang.[citation needed]