First of all, the Ming dynasty shouted, "No pro-marriage, no compensation, no land division, no tribute, the son of heaven protects the country and the king dies." This ancestral motto, you know, even in the Han Dynasty, where wolves lived in a busy place, could not be shouted out, let alone in the Tang Dynasty, where foreign policy was basically solved by kissing.
Secondly, economically, although the Ming Dynasty closed the sea and had little foreign exchange, it has to be said that the Ming Dynasty was the last time in the history of China that private capital boiled, which led to the germination of capitalism.
On the other hand, although the Tang Dynasty was open, its opening brought disastrous consequences to future generations, and advanced technology was taken away. If nothing else, say silkworm. In the Tang Dynasty, soldiers were paid with cloth instead of money. Soldiers can get higher profits by selling them to local people or western businessmen at high prices than simply paying money.
However, Princess Wencheng married Songzan Gambu and brought the silkworm to Turpan. Turpan sold the silkworm technology to businessmen from the west. As a result, the soldier's salary payment system was destroyed and the soldier left Germany. Westerners no longer need to come to the Central Plains to purchase silk, so that the communication between the East and the West was gradually interrupted in the future, which also laid the groundwork for the complacency of the Central Plains dynasty in later generations.
Thirdly, politically, no matter how the history books beautify the Tang Dynasty, the Tang Dynasty is always a dynasty with a big family. Numerous aristocratic families made it impossible for the Tang Emperor to keep his word, so that the glory of the Tang Dynasty was so fake in all aspects. On the other hand, it was reasonable if it was the glory of aristocratic families, which also led to the Five Dynasties and Ten Kingdoms after the demise of the Tang Dynasty (the Five Dynasties and Ten Kingdoms also became the graves of aristocratic families).
On the other hand, although the Ming emperors were unreliable, they were the most centralized in the historical dynasties. But under the influence of cabinet system, the embryonic form of capitalism appeared, which made me think. The Ming Dynasty made several extremely serious mistakes on this issue, so that the country was dug down by the Lindong Party, that is, the children of businessmen were allowed to take the imperial examination (this was the basis of the rise of Lindong Party, which completely occupied the imperial court in the late Ming Dynasty), and the scholars' industry and commerce as a whole did not pay taxes (leading to land annexation in the middle period and the state's financial exhaustion in the later period) and attached great importance to military (leading to the erosion of the army and the loss of combat effectiveness).
Culturally, the Ming Dynasty produced a Wang Shouren with knowledge and practice, while the Tang Dynasty had a splendid culture of Tang poetry, but the splendid culture of novels in the Ming Dynasty was comparable to it, so the Ming Dynasty, which could make a breakthrough, was undoubtedly more convincing than the advantages and disadvantages of culture.
Then in the external environment, it was clear that the Ming Dynasty could go to the Western Ocean, but it stood still and was forbidden to go to sea. At this time, the world is kicking off the era of great navigation. This is also the best time for Han people to participate in the world trend. The assumption of this point in time is an irresistible temptation for anyone.
Finally, let me talk about Zhu Yuanzhang. No matter how humble his background is, no matter how wonderful his policies are, he has a very good place, that is, sympathy for the people at the bottom. Farmers' agricultural tax is less than 30%, which is much lower than that in Han and Tang Dynasties. Unfortunately, Zhu Yuanzhang did not understand the operation of state finance. He only knows how to reduce the burden on the people blindly, cut the salaries of officials and put officials to death. The business tax is still very low, which can not effectively make the country.