新五代史
By this point, the Wu generals and officials were all signing petitions for Xu Gao to take the throne — including the old and ill Wang Lingmou, who died shortly after doing so. Song, however, continued to refuse to sign. In winter 937, Xu Gao accepted the throne, ending Wu, and starting his new state. (The "Zizhi Tongjian" referred to his state as Tang (historically known as Southern Tang at this juncture, although other sources, including the "Old History of the Five Dynasties", "New History of the Five Dynasties", and the "Spring and Autumn Annals of the Ten Kingdoms", referred to his state as Qi at this point, and only changed to Tang after Xu Gao subsequently changed back to his birth name of Li (see below).)