Key Facts
- Date of surrender
- June 1215
- Besieged city
- Zhongdu (present-day Beijing)
- Attacker
- Mongol Empire under Genghis Khan
- Defender
- Jin dynasty (Jurchen)
- Method of fall
- Prolonged blockade and famine
Strategic Narrative Overview
Mongol forces progressively isolated Zhongdu, cutting off supply routes and subjecting the city to a prolonged blockade. The Jin court's flight to Kaifeng deprived the capital's defenders of reinforcement and political leadership. With food stocks depleted and no relief forthcoming, the garrison and population endured severe famine. The city's resistance eventually collapsed under these conditions, leading to its surrender in June 1215.
01 / The Origins
The Mongol Empire under Genghis Khan launched a sustained campaign against the Jurchen Jin dynasty, which controlled northern China. Zhongdu served as the Jin capital and a symbol of dynastic power. Repeated Mongol incursions into Jin territory progressively weakened the dynasty's military footing, and the Jin court's decision to relocate to Kaifeng left Zhongdu increasingly exposed and difficult to defend against Mongol encirclement.
03 / The Outcome
Zhongdu surrendered to Mongol forces in June 1215, ending the siege. The fall dealt a decisive blow to Jin authority across northern China, demonstrating that even the dynasty's greatest city could not withstand Mongol siege warfare. The Jin dynasty, now confined largely to territories south of the Yellow River centered on Kaifeng, entered a period of accelerated decline that would culminate in its complete destruction decades later.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Genghis Khan.
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.