the Mongols supposedly promised to retreat from a besieged city if the Jurched defenders would give them a large number of cats and birds as booty. According to the story, the starving residents eagerly gathered the animals and gave them to the Mongols. After receiving all the birds and animals, the Mongols attached burning torches and banners to their tails and released them, whereupon the frightened animals raced back into the city and set it on fire. The story supplied a dramatic dose of war propaganda.