Li's biography in the Old Book of Tang placed his recall in 693 and indicated that he became chancellor thereafter. See Old Book of Tang, vol. 87."舊唐書 列傳 卷三一至四十". Archived from the original on October 11, 2007. Retrieved September 20, 2007. However, as he was clearly chancellor by 692 according to the chronologies of Wu Zetian's reign in both the Old Book of Tang and the New Book of Tang, this dating cannot be correct. See Old Book of Tang, vol. 6 "舊唐書 本紀 卷一至十三". Archived from the original on December 25, 2007. Retrieved November 26, 2007. and New Book of Tang, vol. 4."唐書 本紀 第一至十". Archived from the original on October 11, 2007. Retrieved November 26, 2007.
Li's biography in the Old Book of Tang placed his recall in 693 and indicated that he became chancellor thereafter. See Old Book of Tang, vol. 87."舊唐書 列傳 卷三一至四十". Archived from the original on October 11, 2007. Retrieved September 20, 2007. However, as he was clearly chancellor by 692 according to the chronologies of Wu Zetian's reign in both the Old Book of Tang and the New Book of Tang, this dating cannot be correct. See Old Book of Tang, vol. 6 "舊唐書 本紀 卷一至十三". Archived from the original on December 25, 2007. Retrieved November 26, 2007. and New Book of Tang, vol. 4."唐書 本紀 第一至十". Archived from the original on October 11, 2007. Retrieved November 26, 2007.
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The Zizhi Tongjian placed this event in 691, but also indicated that Li Zhaode was then Fengge Shilang. As he did not become Fengge Shilang until 692, the event likely happened then. See Zizhi Tongjian, vol. 204.
