Original: August 11 & ndash ; While conducting a siege against the Song Dynasty city known as Fishing Town in the province of Chongqing , China , the Mongol Khagan , Mongke Khan , dies in the nearby hills .
Simplified: August 11 - While conducting a siege against the Song Dynasty city known as Fishing Town in the province of Chongqing , China , the Mongol Khagan , Mongke Khan dies in the nearby hills .