Where was the land of wuyue in the Tang Dynasty?

It is said that the land of wuyue is metonymic, covering the present Jiangnan area, including Jiangsu, Zhejiang, Shanghai, eastern Jiangxi, eastern and southeastern Anhui, and most of Fujian. This area was named because it was under the jurisdiction of Wu and Yue during the Spring and Autumn Period and the Warring States Period. The land of wuyue has a slightly different historical scope. In ancient times, eastern Chu and Jiangnan were both wuyue, and now it refers to the south of the Yangtze River, that is, Jiangsu, Zhejiang and Shanghai.

Jiangnan in a broad sense refers to the whole Jiangnan area in the middle and lower reaches of the Yangtze River, that is, Jiangnan Road excluding southern Hunan, southwestern Jiangxi, Guizhou and Fujian. Including the narrow sense of Jiangnan, the north of Jiangxi, the south of the Yangtze River in Hubei and the north of Hunan. But some areas in Fujian are sometimes called Jiangnan. Jiangnan in a broad sense was widely used in ancient times, for example, Du Fu wrote "Meet Li Guinian and Go Down the River" in Changsha. Jiangnan in a broad sense is also used in modern times. For example, Jiangnan in weather forecast refers to Jiangnan in a broad sense; The three famous buildings in Jiangnan (Yellow Crane Tower in Wuhan, Yueyang Tower in Yueyang and Wangtengting Pavilion in Nanchang) refer to Jiangnan in a broad sense.

Jiangnan, now in a narrow sense, refers to the area beautified by literati. That is, except Fujian Province and southern Zhejiang Province, Jiangnan East Road takes Nanjing to Suzhou as the center, including parts of Anhui Province, Jiangxi Province and Zhejiang Province south of the Yangtze River, namely southern Jiangsu, northern Zhejiang, southern Anhui and northern Jiangxi. Some areas north of the lower reaches of the Yangtze River, such as Yangzhou, are located in the north of the Yangtze River, but their economy and culture are similar to those of Jiangnan, and they can also be regarded as part of Jiangnan in the cultural sense. But it is not the Yangtze River basin, and it is considered to be some areas south of Taihu Lake or even south of Qiantang River, such as Shaoxing and Ningbo.