That the two princesses were older than Li Sujie could be inferred from the fact that later, when their younger brother by Empress Wu, Li Hong, requested Emperor Gaozong to let them marry, they were described to be already at least 39 years old, and this request was probably made in 671. See Old Book of Tang, vol. 86 "舊唐書 列傳 卷三一至四十". Archived from the original on 2007-10-11. Retrieved 2007-10-11. and New Book of Tang, vol. 81 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19.. However, Zizhi Tongjian stated that the princesses were "over 29" at the time, which would still make them older than Li Sujie. See Zizhi Tongjian, vol. 202.
This account is per the New Book of Tang, which the Zizhi Tongjian accepted, but the Old Book of Tang indicated that they were strangled. Compare New Book of Tang, vol. 76 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19. and Zizhi Tongjian, vol. 200. (永徽六年十月，废后及萧良娣皆为庶人，囚之别院。武昭仪令人皆缢杀之) Old Book of Tang, vol. 51.
This account is per the New Book of Tang, which the Zizhi Tongjian accepted, but the Old Book of Tang indicated that they were strangled. Compare New Book of Tang, vol. 76 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19. and Zizhi Tongjian, vol. 200. (永徽六年十月，废后及萧良娣皆为庶人，囚之别院。武昭仪令人皆缢杀之) Old Book of Tang, vol. 51.
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That the two princesses were older than Li Sujie could be inferred from the fact that later, when their younger brother by Empress Wu, Li Hong, requested Emperor Gaozong to let them marry, they were described to be already at least 39 years old, and this request was probably made in 671. See Old Book of Tang, vol. 86 "舊唐書 列傳 卷三一至四十". Archived from the original on 2007-10-11. Retrieved 2007-10-11. and New Book of Tang, vol. 81 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19.. However, Zizhi Tongjian stated that the princesses were "over 29" at the time, which would still make them older than Li Sujie. See Zizhi Tongjian, vol. 202.
This account is per the New Book of Tang, which the Zizhi Tongjian accepted, but the Old Book of Tang indicated that they were strangled. Compare New Book of Tang, vol. 76 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19. and Zizhi Tongjian, vol. 200. (永徽六年十月，废后及萧良娣皆为庶人，囚之别院。武昭仪令人皆缢杀之) Old Book of Tang, vol. 51.
This account is per the New Book of Tang, which the Zizhi Tongjian accepted, but the Old Book of Tang indicated that they were strangled. Compare New Book of Tang, vol. 76 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19. and Zizhi Tongjian, vol. 200. (永徽六年十月，废后及萧良娣皆为庶人，囚之别院。武昭仪令人皆缢杀之) Old Book of Tang, vol. 51.
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zh.wikipedia.org
That the two princesses were older than Li Sujie could be inferred from the fact that later, when their younger brother by Empress Wu, Li Hong, requested Emperor Gaozong to let them marry, they were described to be already at least 39 years old, and this request was probably made in 671. See Old Book of Tang, vol. 86 "舊唐書 列傳 卷三一至四十". Archived from the original on 2007-10-11. Retrieved 2007-10-11. and New Book of Tang, vol. 81 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19.. However, Zizhi Tongjian stated that the princesses were "over 29" at the time, which would still make them older than Li Sujie. See Zizhi Tongjian, vol. 202.
This account is per the New Book of Tang, which the Zizhi Tongjian accepted, but the Old Book of Tang indicated that they were strangled. Compare New Book of Tang, vol. 76 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19. and Zizhi Tongjian, vol. 200. (永徽六年十月，废后及萧良娣皆为庶人，囚之别院。武昭仪令人皆缢杀之) Old Book of Tang, vol. 51.
This account is per the New Book of Tang, which the Zizhi Tongjian accepted, but the Old Book of Tang indicated that they were strangled. Compare New Book of Tang, vol. 76 "唐書 列傳 第一至十". Archived from the original on 2008-02-19. Retrieved 2008-02-19. and Zizhi Tongjian, vol. 200. (永徽六年十月，废后及萧良娣皆为庶人，囚之别院。武昭仪令人皆缢杀之) Old Book of Tang, vol. 51.
