The navigation technology of the Ming Dynasty was so developed, why didn't it expand overseas?

First of all, because the thought of the Ming Dynasty was still relatively feudal, Confucianism continued from the Han Dynasty, and the thought was deeply rooted. Even if an individual wants to break the traditional thinking, he doesn't have that condition. The navigation technology of the Ming dynasty was already very good, but the dominant thought of that period did not allow them to expand overseas.

It is also because the agricultural economy has always dominated, and overseas expansion is business. Business was not developing well at that time. They always think that agriculture is the foundation. As long as agriculture develops well, there is no shortage of food and drink. Moreover, the status of businessmen has always been relatively low, because the development of commerce was not recognized by people at that time. They feel that business is unreliable and they always make mistakes. Therefore, the navigation technology of the Ming Dynasty was so good, but it stopped expanding abroad.

More importantly, at that time, the treasury of the Ming Dynasty was empty, and shipbuilding needed huge funds. To tell the truth, there was no more money to build ships in the Ming Dynasty at that time, so it was useless to build ships without money, even if the navigation technology was no matter how good. In fact, Zhu Yuanzhang is also very capable, leaving a lot of money for future generations, enough for them to spend, but too much money is needed for shipbuilding, and Judy's money is also wasted, and the rest is not enough for shipbuilding.

Closing the country is also a very important reason. They are also afraid of opening their doors after foreign expansion, and aggression will follow. Jiangshan, which has just stabilized, doesn't want to set off a wave. Moreover, Zhu Yuanzhang also stayed before his death, so he didn't want to expand overseas easily, so Judy couldn't continue to expand overseas. Judy also thinks that staying is a rule after all and it is necessary to abide by it. Even if these monarchs were smart and talented, they could not foresee what would happen in a hundred years, so overseas expansion was delayed in the Ming Dynasty.