In early times the Chief of a Chinese tribe (another version says an Emperor of China) was at war with the Chief of another tribe who came to attack his territory from the west. The Western Chief so badly defeated the Chinese army that none of the generals or soldiers could be induced to renew hostilities and endeavour to drive the enemy back to his own country. This distressed the Chinese Chief very much. As a last resort he issued a proclamation promising his daughter in marriage to anyone who would bring him the head of his enemy, the Chief of the West.