Chiang Tzŭ-ya was originally in the service of the tyrant Chou Wang, but transferred his services to the Chou cause, and by his wonderful skill enabled that house finally to gain the victory. The decisive battle Page 153took place at Mu Yeh, situated to the south of Wei-hui Fu, in 1122 B.C. The soldiers of Yin, 700,000 in number, were defeated, and Chou, the tyrant, shut himself up in his magnificent palace, set it alight, and was burned alive with all his possessions. For this achievement Chiang Tzŭ-ya was granted by Wu Wang the title of Father and Counsellor, and was appointed Prince of Ch’i, with perpetual succession to his descendants.