Prolegomena to the Ju-nan i-shih: A Memoir on the Last Chin Court Under the Mongol Siege of 1234
Ju-nan i-shih is a reminiscence on the events at the refuge Chin capital of Emperor Ai-tsung (r. 1224-1234) at Ts’ai-chou, Honan, during the Mongol siege of July 1233 to February 1234, when it capitulated.