Guangling: The jurisdiction of Guangling County is equivalent to the east of Hongze Lake and Liuhe at the junction of Jiangsu and Anhui today, south of Siyang, Baoying and Guannan, west of Chuanchang River and north of Yangtze River. In the Tang Dynasty, it was changed to Yanzhou, Yanzhou and Yangzhou, and later changed to Guangling County.
Yangzhou: Actually, in poetry, it refers to the same place as Guangling. In the first year of Zhenguan of Emperor Taizong (627), the whole country was divided into 10 road, and Yangzhou belonged to Huainan road. In the first year of Tianbao in Xuanzong of Tang Dynasty (742), it was changed to Guangling County. In the first year of Su Zonggan Yuan (758), Guangling County was changed to Yangzhou.
The entries come from the Internet.