and Lake Manzalah. Al-Kamil decides to halt the retreat and turns his forces to deliver a smashing attack upon the disorganized Crusaders, losing some 4,300 men. September – Francis of Assisi, an Italian preacher, arrives in the Crusader camp and introduces Catholicism in Egypt. He seeks permission from Pelagius to visit Al-Kamil. After an initial refusal, he sends Francis under a flag of truce to Faraskur. Al-Kamil receives him courteously and offers him many gifts. He accepts a death-bed baptism, and is escorted back to the Crusader camp. October – Al-Kamil sends two captive knights as envoys, to renew his former offers of an armistice. If the Crusaders evacuate Egypt, he will return the True Cross (lost in the Battle of Hattin) and they can have Jerusalem, all central Palestine and Galilee. John I advised its acceptance, along with the nobles from England, France and Germany. Pelagius again refuses the peace terms. November 5 – Siege of Damietta: The Crusaders enter Damietta and find it abandoned. Seeing the Crusader standards flying from the towers, Al-Kamil hastily abandons his camp at Faraskur and withdraws to Mansoura. Survivors in the city are either sent into slavery or held as hostages to trade for Christian prisoners. On November 23, the Crusader army captures the city of Tinnis. Mongol Empire Winter – Genghis Khan sends a Mongol army (some 20,000 men) under his eldest son Jochi and Jebe to cross the Tian Shan mountains ("Heavenly Mountains") to ravage the fertile Fergana Valley, in the eastern part of the Khwarezm Empire. The Mongols suffer many losses but slip through the defensive lines and confuse the enemy who thinks this is Genghis' main force. Muhammad II dispatches his elite cavalry reserve to protect the fertile regions with force. Meanwhile, another Mongol army under his second and third sons Chagatai and Ögedei passes through the Dzungarian Gate, and immediately start laying siege to the border city of Otrar. Mongol forces under Chagatai and Ögedei capture Otrar after a 5-month siege. The city becomes the first of many settlements to have its entire population slain or enslaved before it is razed to the ground. Inalchuq, the Khwarezmian governor of Otrar, is captured and executed by pouring molten silver into his eyes and ears – an unlikely and unnecessarily expensive end. By letter, Genghis Khan summons Qiu Chuji (Master Changchun) to visit him, to advise him on the medicine