Youzhou in the Tang Dynasty was in Hebei and northern Liaoning. Chongzhou in the Tang Dynasty was a state capital of today's Hebei Province (yu zhou is the southeast of today's Daming in Hebei Province). Liangzhou in the Tang Dynasty is now Wuwei, located at the eastern end of Hexi Corridor in Gansu. Known as "the tourist symbol capital of China", "the hometown of wine in China", "the historical witness that Tibet belongs to the motherland" and "the only producing area of white yak in the world".

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Youzhou transportation center

Youzhou was originally a land transportation hub at the northern end of Hebei Plain. In the fourth year of Sui Daye (608), Yongji Canal was opened, leading Qinshui to the Yellow River in Nantong and Zhuo Jun in the north. In seven years, Yang Di Yang Guang took a dragon boat from Jiangdu (now Jiangdu District, Yangzhou City, Jiangsu Province) to Zhuo Jun via Yongji Canal and the Yellow River. In the same year, migrant workers south of Jianghuai transported rice from Liyang (southeast of Xunxian County, Henan Province) and Luokou (northeast of Gongxian County, Henan Province) to Zhuo Jun County, "more than a thousand miles". Due to the excavation of Yongji Canal, Zhuojun at the end of the canal became the center of land and water transportation in the north.