Wusong River comes from Taihu Lake, which was called Zhenze in ancient times. Taihu Lake enters the sea through Songjiang, Loujiang (now the first line of Liuhe) and Dongjiang, which is the so-called "Three Rivers". "Shangshu Gong Yu" has a cloud: "When the three rivers enter, the earthquake will be fixed." "Three Rivers" used to be a big river with a huge amount of water, especially Songjiang, the middle branch, as the widest mainstream. According to many historical records, Songjiang has long been more than 10 km wide, with a wide river surface and surging momentum. There is a poem to prove it: "The water of Wusong came to shock, and the waves were mighty." By the middle Tang Dynasty, Du Fu, a great poet, had written a famous sentence, "Andy and Bingzhou cut quickly, cut Wusong and half the river" in "Painting Landscape Songs". Until the Northern Song Dynasty, Songjiang in Qingpu County was still "nine miles wide" and was still the main channel through which Taihu Lake discharged into the East China Sea. The Wusong River in the Tang and Song Dynasties is vast, which is by no means comparable to the Suzhou River today. The widest part of the estuary is trumpet-shaped with a width of 20 miles. "Wusong ancient river is deep and wide, comparable to thousands of rivers."
In the Western Jin Dynasty, Hans Zhang, a native of the State of Wu, "thought about Wuzhong's food, soup and perch because of the autumn wind", so he abandoned his official position and returned to Wu. The perch and perch he misses are the specialties of Wusong River, and there are allusions to "perch thinking". This allusion appeared repeatedly in later Song Ci, and Xin Qiji's Ci also said that "perching is said to be beautiful".
Since the end of the Song Dynasty and the beginning of the Yuan Dynasty, the Wusong River has been shrinking day by day due to uncontrolled war, siltation, loss of water conservancy officials, improper measures and local officials conniving at private land reclamation. In the 15th year of Yuan Dynasty (1278), after Huating House was renamed Songjiang House, Songjiang was officially renamed Wusongjiang.
From the first year of Yongle (1403), Xia Yuanji, the minister of the Ministry of Industry, led a crowd to dredge Fanjiabang, which is connected with the Huangpu River, and then entered Wusongkou from the present Waibaidu Bridge to the Gunan Mill east of Fuxing Island. Huangpu flows northwest from Fuxing Island to Wusongkou and flows into the Yangtze River, so it is called "Huangpu wins songs". By 1569, when managing the Wusong River, Hairui judged that the trend of "Huangpu seizing the song" could not be reversed, and then established the policy of "entering the sea from Huangpu", which basically formed today's pattern.
The mouth of the Yangtze River is called Wusongkou. In the Southern Song Dynasty, Xianchun recorded a Wusong estuary in Volume 9 of Yuzhi. In the second year of Yongle in the Ming Dynasty (1404), Fanjiabang was opened, and the Huangpu River diverted to join the Wusong River near Fuxing Island. Therefore, in the Ming Dynasty, it was said that the Wusong estuary was the mouth of the Huangpu River. There is Wusong sand outside Wusong estuary, which hinders navigation. In the third year of Qing Dynasty (19 1 1), the left guide embankment and the right shun dam were built to divert the flow of sand and prevent the inflow of sediment from the Yangtze River, and the sand outside Wusong gradually disappeared.
After the opening of Shanghai, foreigners who came to Shanghai found that they could reach Suzhou Fucheng by boat, so the English standard translation is "Suzhou River". 1848, when Shanghai Daotai and the British Consul in Shanghai signed a treaty to expand the British Concession, Wusong River was first called Suzhou River in the official text, and later Shanghai folks gradually called it Suzhou River. But people and textbooks in Suzhou, Hebei and the upper reaches of xin jing still call it Wusong River.