What was the purpose of the four emperors marrying 17 Mongolian empresses in the early Qing Dynasty?

It is understood that Hailanzhu is a Chinese translation, the name of Horqin Borzijit Banner and the Mongolian name of Harizhula. She was born in the thirty-seventh year of Wanli in Ming Dynasty, and was Xiao Zhuang's own sister. She is four years older than Xiaozhuang. Zhu Lan was 26 years old when she married Huang Taiji, nine years later than Xiao Zhuang, but she and Huang Taiji had deep feelings.

Interestingly, from Taizu and Taizong in the Qing Dynasty to Sai-jo and Sheng-zu in the Qing Dynasty, the four empresses and thirteen concubines all came from Mongolian ministries such as Horqin. So, why did the Qing emperor love to marry Mongolian women? The expert explained the reason.

In the late Ming Dynasty, Mongolia was gradually divided into three parts: from the Mongolian grassland in the west to the Moxi Elut part in Junggar Basin; Mobei Halka Department, south of Lake Baikal and north of Hetao; "Monan" ministries in eastern Mongolia and south of the desert.

"Monan" is adjacent to Houjin established by Nurhachi, and its geographical position is on the right wing of Houjin, which has a restraining effect on Houjin's entry into Liaoshen area. In order to avoid worries, Nurhachi conquered the various ministries of Monan one by one by force. "Monan" Horqin Department was the first object that Nurhachi conquered. After many contests, Horqin withdrew his troops and demanded an alliance, and the marriage ended successfully.

In the first month of the fortieth year of Wanli in Ming Dynasty, Nurhachi betrothed his daughter to Mao, the daughter of Belle Ming 'an in Horqin, Mongolia, in the name of "quite graceful". Nuba greeted him with courtesy and gave a big banquet to get married. So Ming 'an Baylor became the first Mongolian maharaja to marry the Qing Dynasty.

In the 43rd year of Wanli in Ming Dynasty, Nurhachi married Bolzigit, the daughter of Congo, the king of Horqin County. Nurhachi not only personally married the daughter of Horqin Liang Baylor, but also ordered his sons to marry the daughters of Mongolian princes, including the second son Daishan, the fifth son Mengtai, the eighth son Huang Taiji, the tenth son Dege, the twelfth son Azig and the fourteenth son Dourgen, all of whom married the daughters of Mongolian princes. This is also the beginning of the "Manchu-Mongolian marriage" in the whole Qing Dynasty.

In October of the third year of Qing Cong, Huang Taiji transferred soldiers to enlist. Baylor, the 23rd member of Horqin Department, led the troops to follow, defeated the Ming army and made outstanding achievements. In five years, Horqin attacked the Daling River with Huang Taiji, and defeated the Ming general Zu Dashou. It can be seen that military purpose is also an important reason for Manchu-Mongolian marriage.