The end of Ming (明) (1368-1644) was about eight weeks of events that — literally — ended an empire.
Note: Wu Sangui did not intend to give China to the Qing. He made a desperate tactical alliance against Li Zicheng and was then outmaneuvered. Saying that he “opened the passes” makes it sound deliberate; what happened was a man with no good options choosing the enemy he thought he could survive, and getting a dynasty he didn’t bargain for.
The three-way board in early 1644
By spring 1644 there were not two but three military powers contesting north China, and understanding the collapse means holding all three at once.
Ming was rotting from the center. The Chongzhen emperor (Zhu Youjian, r. 1627–1644) had inherited the wreckage from Wei Zhongxian [1568-1627, 魏忠賢, considered by most historians as the most notorious eunuch in Chinese history], executed the man, and then spent 17 years unable to stabilize anything — burning through dozens of chief grand secretaries and a string of field commanders. He had the general Yuan Chonghuan executed by slow slicing in 1630, which tells you something about why competent men feared serving him. The treasury was empty, the army unpaid, the northwest was in famine and revolt.
Li Zicheng’s Shun, the rebel state. Li (李自成), the “Dashing King” (闖王), was a former postal-relay worker from Shaanxi. Note the detail that the Ming had cut postal-system funding as an money-saving measure, throwing men like Li out of work, a small fiscal decision that helped produce its nemesis. After years of rebellion across the famine-struck northwest he formally proclaimed the Shun dynasty (大順) at Xi’an in early 1644, with reign-era and the full apparatus of a claimant to the Mandate of Heaven. This was no longer a bandit horde; this was a rival state marching on the capital.
The Manchu Qing, beyond the Wall. The Aisin Gioro had been consolidating since Nurhaci, had proclaimed the Qing dynasty in 1636 under Hong Taiji, and after his death in 1643 they were ruled by the regent Dorgon (多爾袞) in the name of the child Shunzhi emperor (Fulin). They had been raiding past the Wall for years but were blocked at the one place that mattered: Shanhai Pass (山海關), the fortified point where the Great Wall meets the sea, the gate between Manchuria and the north China plain. [I visited there in 1999-2000.] Holding that gate was Wu Sangui (吳三桂), the Ming’s best remaining field general, with the empire’s best surviving army.
So: a hollow dynasty in the middle, a rebel state closing from the west, a foreign power waiting in the northeast, and the one army that could have mattered pinned at the eastern gate with its back to the Manchus.
Li’s march and the fall of Beijing
Li moved on Beijing in spring 1644, crossing Shanxi. Defenses barely existed — garrisons surrendered or defected, often without a fight, because the soldiers were unpaid (!) and the Ming brand, so to speak, was worthless. Taiyuan fell; the inner passes (Juyong) gave way. The speed is the tell: this wasn’t a hard-fought campaign but a structure that had already failed internally, collapsing on contact.
Emperor Chongzhen’s last weeks are a study in paralysis. He floated moving the court south to Nanjing — the Ming’s secondary capital, with a full shadow government, where the dynasty could plausibly have survived as a southern regime (as it briefly did). He couldn’t commit; officials wouldn’t take responsibility for so radical a step, and he wouldn’t order it over their objections. He summoned Wu Sangui to abandon the forward position at Ningyuan and march to defend Beijing — but issued the order dangerously late, and Wu’s army, moving its garrison population too, was still on the road when the capital fell.
Beijing fell on April 25, 1644 (the dating runs on the lunar calendar; you’ll see the “18th–19th of the third lunar month”). Defense collapsed from within — a eunuch reportedly opened a gate. That night Emperor Chongzhen is said to have killed or wounded his daughters to spare them captivity, ordered the empress to suicide, and at dawn climbed the artificial hill behind the Forbidden City — Coal Hill / Jingshan (煤山/景山) — accompanied only by the eunuch Wang Cheng’en (王承恩), and hanged himself from a tree. A final edict was found on him, blaming his ministers while accepting that he had failed the dynasty. Wang hanged himself beside him. He was the last emperor of the Ming to rule from Beijing, dead at age 33.
Treat the gorier domestic details (exactly which daughters, the precise words) as semi-legendary embellishment that was crystallized later; the core — suicide on Jingshan, alone but for one eunuch, on the morning the city fell — is solid.
The hinge: Wu Sangui’s impossible choice
Now the genuinely contingent part, where 1644 could have gone otherwise.
Wu Sangui, marching toward Beijing, learned en route that the capital had already fallen and that the emperor was dead. He turned back to Shanhai Pass. His position was now catastrophic: the Ming he served no longer existed; Li Zicheng’s Shun held the capital and his own family (his father Wu Xiang was in Li’s hands in Beijing); and the Qing sat at his back. He commanded the best army in north China and had no state to serve.
Li tried to win him over — he needed Wu’s army and the Shanhai gate to secure the realm — and initially Wu appears to have considered submitting to the Shun. What turned him is the contested core of the whole story.
The romantic version, immortalized in the line “冲冠一怒为红颜” — “his cap thrust off his head in rage for the sake of a beautiful woman” — holds that Li’s general Liu Zongmin seized Wu’s favorite concubine, Chen Yuanyuan (陳圓圓), and that this personal outrage drove Wu to defect. Historians treat this as literary embellishment, not cause. It’s too neat, it surfaces strongly in later poetry and fiction, and it conveniently moralizes a brutal strategic decision.
The substantive drivers were political. Li’s regime, on entering Beijing, turned on the Ming elite: his lieutenant Liu Zongmin ran a campaign of extortion and torture against captured officials to fund the army (the zhuixiang 追贓 — “pursuing back-payments”), and Wu’s own father was seized and his family’s wealth confiscated. This signaled to Wu — and to the whole northern gentry class he represented — that the Shun was not going to be a regime they could serve and prosper under. It was a predatory peasant state settling scores with their class. That, more than any concubine, is what made submission to Li intolerable.
So Wu did the desperate thing: he opened negotiations with Manchuria Dorgon for military assistance against Li. The surviving evidence suggests that Wu initially sought a Manchuria alliance — borrowing Manchu cavalry to crush Li and, in some readings, restore a Ming heir — on something like a partnership footing, perhaps offering territory or tribute. He was not, in his own conception, “surrendering China,” or anything like that. Dorgon however understood the strategic prize better than Wu did and maneuvered the “alliance” into a submission, withholding full commitment until Wu’s position forced him to accept Qing terms and Qing supremacy.
The Battle of Shanhai Pass
Li marched east from Beijing with a large army to deal with Wu before the Qing could intervene. The battle came at Shanhai Pass around late May 1644.
Wu’s forces and Li’s Shun army fought hard and Wu was being worn down. At the decisive moment Dorgon’s Manchu cavalry, held in reserve, charged into Li’s flank — by tradition out of a dust storm, with Wu’s troops wearing white cloth badges so the Manchus could tell allies from enemies. Li’s army, already engaged and exhausted, broke. It was the hinge battle of the dynastic transition: in a single engagement the Shun lost the initiative permanently, and the Qing crossed the Wall not as raiders but as the army that would rule. (Think: the battle for Helm’s Deep.)
The Qing enter; Li’s collapse
Li retreated to Beijing. In a hasty, almost defiant gesture he had himself formally enthroned as Shun emperor in early June 1644 — a coronation that lasted essentially a day — then abandoned the capital, looting and burning parts of the palace complex as he withdrew west.
Dorgon’s forces, with Wu, entered Beijing on about June 5–6, 1644. Dorgon’s move here was politically shrewd: he had the Qing publicly mourn and ceremonially rebury the Chongzhen emperor, framing the Qing not as conquerors of the Ming but as avengers of it — punishing the regicide-rebel Li and restoring order. This let the Qing recruit the surrendering Ming bureaucracy and Han military elite (Wu, chief among them) under a legitimating story.
The child Shunzhi emperor was brought from Manchuria and formally enthroned in Beijing that autumn, declaring the Mandate of Heaven from the Ming capital.
Li Zicheng’s Shun disintegrated over the following year under combined Qing–Wu pressure, fleeing south and west. Li was killed in 1645 in the Hubei hill country — the circumstances are murky, plausibly cut down by local village militia rather than in battle, an ignominious end for a man who had been emperor for a day.
The Ending of a Dynasty can be Messy
The Ming did not end in 1644 in any tidy sense. The fall of Beijing ended the Beijing-centered Ming, but the dynasty’s secondary capital and southern administration produced a string of claimants — the Southern Ming (南明) — that resisted the Qing for nearly two more decades:
–The Hongguang court at Nanjing (1644–45), which fell when the Qing took Nanjing.
–A succession of further claimants down the southeast coast and southwest.
–The Yongli emperor, who held out in the far southwest and Burma until 1662, when he was captured and executed — by Wu Sangui himself. Wu, who had opened the gate against Li to avenge one Ming emperor, 18 years later strangled the last claimant of that same dynasty on the Qing’s behalf. (And in a final irony he rebelled against the Qing in 1673 in the Revolt of the Three Feudatories, and died a failed rebel.)
–Koxinga (Zheng Chenggong) and his heirs held Taiwan as a Ming-loyalist base until 1683.
So 1644 saw the decapitation of the Ming and was the moment when the Qing became the ruling power in the north, but the conquest of China Proper took the rest of the 1640s and resistance ran to the 1680s.
The deeper causation
Why did the structure fail precisely then? The convergence is the real answer, and it ties back to both silver and to governance:
–Fiscal seizure. The state taxed in silver, couldn’t borrow, and couldn’t control its money supply, and it faced exactly the wrong type of shock — emergency military surtaxes (the Liaoxiang for the Manchu war) stacked onto a peasantry already in crisis, with whatever role the contested late-1630s silver-import disruption played (no more silver from Spain) in deflating the economy.
–Climate and famine. The 1630s–1640s were among the worst of the Little Ice Age in north China — drought, failed harvests, and famine concentrated in the northwest, the precise region that bred Li’s rebellion.
–Epidemic. Severe outbreaks struck north China and reportedly Beijing itself in the early 1640s, plausibly weakening the capital’s defenses on the eve of Li’s arrival.
–Institutional paralysis. Decades of Wanli-era absenteeism and Tianqi-era factionalism had hollowed out the bureaucracy’s capacity to respond, and Chongzhen’s own erratic brutality toward his commanders made the system worse, not better.
Summary
A commercialized, globally connected economy bolted onto a fiscal-military state with no shock absorbers met simultaneous shocks — climate, epidemic, monetary, and military — that any one of which it might have survived, and which together it could not.
What’s solid vs. contested
Solid: the three-way structure; Beijing falling on April 25, 1644; Chongzhen’s suicide on Jingshan; Wu’s alliance with Dorgon; the Qing victory at Shanhai Pass; entry into Beijing June 1644; Li’s flight and 1645 death; the Southern Ming continuing to 1662/1683.
Contested or legendary: Wu’s motives (Chen Yuanyuan is romance, not cause); whether Wu meant alliance or submission (evidence favors alliance, with Dorgon converting it); the army sizes (source figures are propaganda-inflated — don’t trust them); and the gorier specifics of Chongzhen’s last hours.
The standard accounts are in Frederic Wakeman’s “The Great Enterprise” (1985) — the definitive study of the Qing conquest — and the relevant volumes of “The Cambridge History of China.”
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