Ögedei's commanders in China. The conflicts between the Mongols and the Song troops took place in the areas of Chengdu. Töregene sent her envoys to negotiate peace, but Song imprisoned them. The Mongols captured Hangzhou and invaded Sichuan in 1242. She ordered Zhang Rou and Chagaan (Tsagaan) to attack the Song Dynasty. When they pillaged the Song territory, the Song court sent a delegation to ceasefire. Chagaan and Zhang Rou returned north after the Mongols accepted the term. During the reign of Ögedei, the Seljuks of Rum offered friendship and a modest tribute to Chormaqan. Under Kaykhusraw II, however, the Mongols began to pressure the Sultan to go to Mongolia in person, give hostages, and accept a Mongol darughachi. Mongol raids began in 1240. The Seljuk Sultan Kaykhusraw assembled a large army to meet them. The king of Cilician Armenia was required to produce 1400 lances and the Greek Emperor of Nicaea 400 lances. Both rulers met the sultan in Kayseri to negotiate details. The Grand Komnenos of Trebizond contributed 200, while the young Ayyubid prince of Aleppo supplied 1000 horsemen. In addition to these, Kaykhusraw commanded the Seljuq army and irregular Turkmen cavalry, though both had been weakened by the Baba Ishak rebellion. However, Baiju and his Georgian auxiliaries crushed them at the battle of Köse Dağ in 1243. After that battle, the Sultanate of Rum, the Empire of Trebizond and the Lesser Armenia quickly declared their allegiance one by one to the Mongol Empire ruled by Töregene Khatun. The Mongol troops under general Baiju probed the forces of Abbasid Iraq and Ayubid ruled Syria in 1244–46. Güyük's coronation She was an exercise of power in a society that was traditionally led only by men. She managed to balance the various competing powers within the empire, and even within the extended family of the descendants of Genghis Khan, over a 5-year period in which she not only ruled the empire, but set the stage for the ascension of her son Güyük as Great Khan. During Töregene's reign, foreign dignitaries arrived from the distant corners of the empire to her capital at Karakorum or to her nomadic imperial camp. The Seljuk sultan came from Turkey—as did representatives of the Caliph of Abbasid in Baghdad. So did two claimants to the throne of Georgia: David Ulu, the illegitimate son of the late king—and David Narin, the legitimate son of the same