emperor ming promoted ban and commissioned him to next visit yutian ("khotan"), then the strongest kingdom in southern xiyu, which had a strong alliance with north xiongnu. guangde (廣德), the king of yutian, trusted his chief warlock, who demanded ban's horse. ban agreed to give him the horse, and then, when the warlock arrived to pick up the horse, immediately executed him, and sent his head back to guangde. guangde was impressed and submitted to han's suzerainty. with yutian having submitted, the xiyu kingdoms largely all submitted as well.