Why did the economy of Song and Ming Dynasties stagnate for a long time?

The economy of Song Dynasty developed rapidly, and GPD ranked first in the world.

The Ming Dynasty witnessed unprecedented economic prosperity.

The economy and culture of Ming Dynasty belong to a developed stage in the history of China. Later generations counted the tax revenue of the imperial court at that time, and the economic scale of the Ming Dynasty ranked first in the world. In the early Ming Dynasty, the centralization of monarchy was strengthened, and the emperor monopolized the power. After Xuande, the imperial power began to weaken, and the cabinet competed with eunuchs for power and profit. Since the late Ming Dynasty, with the Renaissance, geographical discovery and religious reform in the West, science and technology have developed rapidly. At the same time, a large number of scientists, geographers and writers have emerged in China, such as Xu Guangqi, Song, Xu Xiake and Feng Menglong. Western learning also came to China with a group of missionaries, which opened a window and opportunity for cultural exchanges between the East and the West, and China's traditional science and technology entered the stage of summarization.

The Song Dynasty witnessed unprecedented economic prosperity, with great progress in agriculture, printing, paper making, silk weaving and porcelain making. Outstanding achievements in navigation and shipbuilding, developed overseas trade, and trade with more than 50 countries in the South Pacific, the Middle East, Africa and Europe. The development of Jiangnan in the Southern Song Dynasty made Jiangnan an economic and cultural center.