Emperor Chongzhen Zhu Youjian, who hanged himself in Meishan, was accidentally rescued due to a broken ancient tree and fled south to Nanjing to rebuild his country. At this time, half of the Ming Dynasty had fallen. Inside, the conservatives headed by Ma Shiying controlled the government, the gentry evaded taxes and cheated the country. Outside, Duduo's army was pressing down on the country, and the Japanese fleet was spying on the southeast. The country was already in ruins.
Zhu Youjian used iron and blood to break the situation: training the new army, improving firearms, and winning the battle to defend the Yangtze River; checking land taxes, rectifying commercial taxes, cutting off the tax-free privileges of the gentry; putting down Ma Shiying's coup, and purging the conservative forces in the court. Facing the north-south attack by the Qing and Japanese alliance, he took the initiative to lead the Northern Expedition, surprise attack on the Qing army's grain camp, fire attack on the Japanese fleet, regain Lushunkou, and finally forced the Manchus to surrender and complete the unification of the world.
After the world was peaceful, Zhu Youjian was not trapped by the shackles of his family and the world. He pushed forward the electoral system against the opinions of the public and thwarted the assassination plot of conservatives. After the establishment of the first democratically elected parliament of the Ming Dynasty, he voluntarily abdicated, ending the hereditary monarchy for thousands of years. With his own concession, he opened the door to a new era for Chinese civilization.
Intention: the possibility of historical changes