The Rise of Wang Zhen
When the Ming Yingzong Emperor ascended the throne as a child, power was initially held by Grand Empress Dowager Zhang and the “Three Yangs.” However, after her death, the eunuch Wang Zhen, who had raised the Emperor, seized control. He dominated the court, removed a plaque prohibiting eunuch interference in politics, and engaged in corruption, even smuggling weapons to the Oirat Mongols. This emboldened the Oirat leader Esen Taiji, who unified the steppes and launched a massive invasion in 1449.
The Tumu Crisis
Influenced by Wang Zhen’s reckless advice to emulate his ancestor Yongle, the young Emperor insisted on leading a campaign himself despite opposition from ministers. The expedition was a disaster. Due to Wang Zhen’s indecisiveness – delaying the retreat to show off near his hometown – the Ming army was overtaken at Tumu Fortress. The army was annihilated, Wang Zhen was killed by an angry general, and the Zhengtong Emperor was captured by the Oirats. This event is known as the Tumu Crisis.
Yu Qian’s Stand
Panic swept through Beijing upon news of the defeat. An official named Xu Cheng suggested fleeing to Nanjing, but the Minister of War, Yu Qian, vehemently opposed this, arguing that abandoning the capital would doom the dynasty, citing the Song Dynasty’s fall as a warning. His resolve convinced the court to stay and fight. To stabilize the political situation and deny the enemy leverage, the court elevated the Emperor’s brother, Zhu Qiyu, to the throne as the Jingtai Emperor (Daizong), while demoting the captive ruler to “Senior Emperor.”
The Battle of Beijing
Esen Taiji approached Beijing with the captive Emperor as a hostage, expecting an easy surrender. Instead, he found the city heavily fortified. Yu Qian took command, rejecting General Shi Heng’s proposal to close the gates and hide. Instead, Yu deployed the remaining troops outside the nine city gates to confront the enemy directly. In fierce fighting, particularly at the Desheng Gate, the Ming forces used firearms and superior tactics to repel the Oirats. Realizing he could not take the city and fearing encirclement, Esen retreated.
Rebuilding and Intrigue
Following the victory, Yu Qian reorganized the military into ten camps, strengthening Beijing’s defenses. Meanwhile, Esen, facing internal strife and economic hardship, sought to restore trade relations by releasing the Senior Emperor. The Jingtai Emperor, reluctant to share power, received his brother back coldly. The former Emperor was placed under house arrest in the Southern Palace, setting the stage for future political upheaval.
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