 During a war with the Rouran, Chuban sorcerers incited a snowstorm against them, making the Rouran so frostbitten they had to stop their campaign and retreat.A similar legend is later told about the Eurasian Avars sorcerers in their war with the Francs, and Naiman sorcerers against Chingis-Khan.The Manichaean Chuyue tribe's descendants, Shatuo, later founded the Chinese state Hou Tang (923-936) in Northern China, and adopted a Chinese surname Li (李).