Kang of Song, with Ticheng murdered or exiled. The king was ambitious and had succeeded in beating troops from Chu, Wei and Qi and annexing Teng. However, the kingdom was finally annexed by Qi in 286BC, with troops from Chu and Wei serving on behalf of Qi. Qin, which had been an ally of Song, refused to intervene for strategic and diplomatic reasons after being convinced by Su Dai from Wei. Su's predictions were proven correct and Qin benefited from the downfall of its former ally. The philosopher Mozi references this state in the chapter "Obvious Existence of Ghosts", in which he mentions a number of Spring and Autumn Annals, including those of the Zhou, Yan, and Qi. The Spring and Autumn Annals of Song has not survived. Rulers Unless otherwise indicated, the ruler is the son of his predecessor. Weizi 微子 (Qi 啟), brother of the last king of Shang, Di Xin Weizhong 微仲 (Yan 衍), younger brother of the above Ji, Duke of Song 宋公稽 Duke Ding 宋丁公 (Shen 申) Duke Min I 宋湣公 (Gong 共), ancestor of Confucius Duke Yang 宋煬公 (Xi 熙), younger brother of the above Duke Li 宋厲公 (Fusi 鮒祀), son of Duke Min I Duke Xi 宋僖公 (Ju 舉), 859–831 Duke Hui 宋惠公 (Jian 覵), 830–800 Duke Ai 宋哀公, 799 Duke Dai 宋戴公, 799–766 Duke Wu 宋武公 (Sikong 司空), 765–748 Duke Xuan 宋宣公 (Li 力), 747–729 Duke Mu 宋穆公 (He 和), 728–720, younger brother of the above Duke Shang 宋殤公 (Yuyi 與夷), 719–711 Duke Zhuang 宋莊公 (Feng 馮), 710–692 Duke Min II 宋閔公 (Jie 捷), 691–682 You, Duke of Song 宋公游, assassinated less than 3 months after accession. Duke Huan I 宋桓公 (Yuyue 御說), 681–651, younger brother of Duke Min II Duke Xiang 宋襄公 (Zifu 茲父), 650–637 Duke Cheng 宋成公 (Wangchen 王臣), 636–620 Yu, Duke of Song 宋公禦, younger brother of the above, assassinated less than one month after accession. Duke Zhao I 宋昭公 (Chujiu 杵臼), 619–611, son of Duke Cheng Duke Wen 宋文公 (Bao 鮑), 610–589, younger brother of the above Duke Gong 宋共公 (Xia 瑕), 588–576 Duke Ping 宋平公 (Cheng 成), 575–532 Duke Yuan 宋元公 (Zuo 佐), 531–517 Duke Jing 宋景公 (Touman 頭曼), 516–451 Duke Zhao II 宋昭公 (De 得), 450–404, great-grandson of Duke Yuan; possibly 468–404, making him one of the longest-reigning monarchs. Duke Dao 宋悼公 (Gouyou 購由), 403–396 Duke Xiu 宋休公 (Tian 田), 395–373 Duke Huan II 宋桓公 (Bibing