Crossing the Frozen Frontier: Ice, Climate, & Warfare in Ming & Qing China

Weatherhead East Asian Institute

Examine how seasonal freezing of rivers & terrain across Ming & Qing dynasties’ north frontiers reshaped geography of war in early East Asia

Weatherhead East Asian Institute (located at the School of International and Public Affairs)

Speaker: Tristan Brown, Associate Professor of History and the S.C. Fang Chinese Language and Culture Career Development Chair, MITModerator: Eugenia Lean, Professor, East Asian Languages and Cultures; Vice Provost for Faculty Affairs, Columbia UniversityTristan Brown discusses his forthcoming project, “Crossing the Frozen Frontier: Ice, Climate, and Warfare on the Ming and Qing Norther Frontiers.” This article intervenes in both environmental and military history by examining how the seasonal freezing of rivers and terrain across the Ming and Qing dynasties’ northern frontiers reshaped the geography of war in early modern East Asia. Drawing on Chinese and Manchu sources, it traces how winter ice crossings became a defining tactical feature of frontier conflict. For the first two centuries of the Ming, Mongol cavalry routinely exploited frozen waterways such as the Yellow River and mountain corridors through Shanxi and Shaanxi to bypass walled defenses, raid deep into agrarian heartlands, and threaten strategic centers including Beijing. Ice altered patterns of movement, compromised fixed fortifications, and forced the Ming state to contend with winter terrain as an unpredictable component of military planning. These dynamics intensified during the Ming-Qing transition, when new forms of steppe-imperial conflict and state consolidation redefined the strategic use of climate and terrain at the coldest point of the Little Ice Age in the seventeenth century. In reframing frozen landscapes as dynamic instruments of frontier warfare, this study advances an integrated environmental and military historical approach to state power, climate, and mobility.For non-Columbia affiliates, registration is required to access the Morningside campus. After registering you will receive an email with a QR code that must be presented along with a government-issued ID (your name must match exactly the name registered for the event) at either the 116th Street &amp; Broadway or 116th Street &amp; Amsterdam gates for entry. Please register using a unique email address (one email address per registrant) by 4:00pm on Sept. 15 for campus access.Names will be submitted for QR codes 1-2 days prior to the event. Registrants will receive an email from CU Guest Access with the QR code before or on the day of the event.This event is hosted by the Weatherhead East Asian Institute.

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Crossing the Frozen Frontier: Ice, Climate, & Warfare in Ming & Qing China

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