1, to prevent consorts from interfering in government affairs. As we all know, at the end of the Yuan Dynasty, consorts intervened in government affairs very seriously, and a large part of the reason for the demise of the Yuan Dynasty was that consorts intervened in government affairs. Zhu Yuanzhang, the founder of the Ming Dynasty, learned this lesson from the demise of the former dynasty because of the intervention of his consorts, so in order to avoid the intervention of his consorts in state affairs, he revised the "female training" as the selection criteria for empresses. It is clearly pointed out that both princes and Marquis should choose women with folk virtues, and those who offer beauty on their own initiative should be ignored.
At the same time, Zhu Yuanzhang prohibited collusion between the foreign court and the harem to prevent consorts from interfering in the affairs of the court. Choosing a noble daughter as a queen will easily lead to collusion between the imperial court and the harem and weaken the imperial power. The queen of the cold door has no right, no power and no position, which can effectively prevent this and further strengthen the autocratic imperial power.
2, there is no family restriction, giving women more equal opportunities. Emperor Zhu Yuanzhang of the Ming Dynasty was born in a poor family. He even worked as a beggar who couldn't eat. He knows that it is not easy for the people at the bottom. Because of his own experience, he has no family restrictions on the choice of the queen. In his mind, poor women can be among the emperors' families. Therefore, many Empresses of the Ming Dynasty, despite their humble origins, still had the opportunity to join the imperial family.
3, to prevent extravagance and waste, choose a talented queen. Empress elections in the Ming Dynasty were very strict. It needs to be selected at all levels, and outstanding talents can stand out from many women. It is precisely because of the results of the selection at all levels that although many Empresses of the Ming Dynasty were born in poverty, their kindness was not lost to those noble families. Moreover, the choice of the queen of the poor family can show that the royal family has set an example, but in the extravagant days, this can effectively prevent the spread of social extravagance at that time.
Therefore, compared with other dynasties, most of the queens of the Ming Dynasty were born poor but gentle and virtuous.