However, in the Ming Dynasty in the history of China, there were two emperors at the same time, namely Zhu Qizhen in Ming Yingzong and Zhu Qiyu in Ming Daizong.
Why is this happening? This should start with "the change of civil castles". During the orthodox period, the tile thorn in the north began to invade the frontier of the Ming Dynasty.
At that time, the Ming Dynasty had declined, and Zhu Qizhen, who was only in his twenties, was in high spirits. Encouraged by Wang Zhen, an official, Zhu Qizhen decided to go out in person, but he wouldn't listen, no matter how the minister opposed it.
Sure enough, Zhu Qizhen was defeated and captured in the civil fort. As the saying goes, "A king of a country cannot live without it for a day", and both Queen Sun and the ministers in the DPRK support being emperors for the sake of "Jingtai Emperor".
However, Zhu Qizhen was captured rather than abolished, so in terms of birthright, there were two emperors in the Ming Dynasty, Zhu Qizhen and Zhu Qiyu. What about vasi? Originally, I wanted to use Zhu Qizhen as a negotiation condition, but the Ming Dynasty simply changed to an emperor. Eight years later, Ming Daizong was terminally ill and ignored state affairs. The whole palace was in a panic. In the first month of Jingtai's eighth year, Izayoi, Cao Jixiang, Hou Wuqing, Bin Xu Taichangqing and other DPRK ministers led thousands of people to launch a "change to seize the door".
Their purpose is to help Zhu Qizhen recover and regain the throne. Although it was resisted, it finally succeeded. After Zhu Qizhen came to power, he arrested the minister who supported Zhu Qiyu and changed his title.
However, he did not abolish the title of Emperor Zhu Qiyu on the day of successful restoration. It was not until February 1 day after half a month that Zhu Qizhen issued a letter to "abolish the emperor as King Xi and move westward". Soon after, Zhu Qiyu died suddenly.
Because of the need to control state affairs, we can understand why we need a second emperor, Zhu Qiyu, when Zhu Qizhen was occupied by Wasi people. Strictly speaking, it is not two emperors at a time. After all, it was Zhu Qiyu who made the decision.