Mahdi promised by the Shiites.—March of the Mongols against Sherif ud din.—Siege of El Biret, 1264.—Death of Hulagu, 1265.—Death of Hulagu’s wife Dokuz Khatun.—Berkai’s second campaign to the Caucasus, 1264.—Death of Berkai, 1266.—Nogai’s army retreats on Shirvan 267 CHAPTER XV Kin Emperor sends offerings to the spirit of Jinghis Khan, 1229.—Mongols continue warfare in China.—Siege of Li ho chin by Mongols, 1227.—King Yang attacked by Mongols, 1229.—Defeat of the Mongols by Yra buka, 1230.—Advance of Ogotai and Tului on China.—Ogotai anxious to seize Honan.—Surrender of Fong tsiang.—Arrival of Yra buka, the Kin general at Teng chu, 1234.—Tului’s report to Ogotai of the situation in Honan.—Siege of Yiu chin by Tului.—Capture and death of Yra buka.—Ogotai visits Tului.—Ogotai asks the Kin Emperor to submit.—Advance of Mongols on Shan chiu.—Fall of Honan.—Siege of Nan King.—Appearance of the plague.—Flight of the Emperor from his capital.—Attack of the capital by Subotai.—Defence of Pian king.—Surrender of Pian king.—Execution of Baksan.—Appearance of Mongols near Tsai chiu.—Attack of Tsai chiu by Tatchar, son of Boroul.—Nin kia su yields the throne to Ching lin.—Death of Nin kia su.—Death of Ching lin.—Death of Tului, October, 1232.—End of dominion of the Kins in China, 1234 295 CHAPTER XVI