sentences:  However, on 27 June, Emperor Xuanzong left Zhongdu and moved the Jin capital southward to Bianjing (汴京; present-day Kaifeng, the old Song dynasty capital in Henan Province); the court reached Bianjing about two months later.The Mongols were angered, so they waged war against the Jin dynasty again.On 31 May 1215, Zhongdu fell to the Mongols.