The new Mongol empire quickly moved to annex more territory. The first Mongol conquests were campaigns against the Western Xia. In 1209 the Mongols conquered the Western Xia. Between 1213 and 1214 the Mongols conquered the Jin Empire, and by 1214 the Mongols had captured most of the land north of the Yellow River. In 1221 Mongol generals Jebe and Subodei began their expedition around the Caspian Sea and into Kievan Rus'; Genghis Khan defeated Turkic Jalal ad-Din Mingburnu at the Battle of Indus; the Khwarezmian Empire were defeated that same year. In 1235 the Mongols successfully invaded Korea. Two years later in 1237 Batu Khan and Subodei began their conquest of Rus'; they invaded Poland and Hungary in 1241. In 1252 the Mongols began their invasion of Song China; they would seize the capital of Hangzhou in 1276. In 1258 Hulagu Khan captured Baghdad.