The economic center moved to the south completely, and later there was a proverb, "Suzhou and Shanghai are familiar, and the world is enough."
The proverb "Suzhou Lake is ripe, and the world is full" has been circulated since the Southern Song Dynasty. The source can be found in Gauss's books such as "Storing manuscripts in shame hall, rather persuading farmers". Su refers to Suzhou, now Wuxian County, Jiangsu Province, east of Taihu Lake. Huzhou refers to Huzhou, which is now south of Taihu Lake in Xing Wu, Zhejiang. Taihu Lake Basin, with flat terrain, fertile land and numerous small rivers, is called "Water Town Zeguo". During the period from Song Gaozong to Song Xiaozong (1127-1189), water conservancy in Taihu Lake area was built, and the estuary was opened to the north of Kunshan and Changshu. In filial piety, a gate was set up at the exit of Taihu Lake to adjust the water volume. The lake is low-lying, and the embankment is high, which can block the wind and waves. Due to the dredging of water conservancy, serious floods were eliminated, and low fields and high fields were irrigated. In addition, advanced agricultural production technology, farmers' intensive cultivation, "plowing without waste (city), cutting without ridge" and threshing with the latest farm tools "flail" made Su Hu a high agricultural production area in the Southern Song Dynasty. Crops are harvested twice a year, and the yield per mu in the field reaches five or six stones. Therefore, it is known as "Su Hu is ripe and the world is full". /news/view/ 187426/