The name of the eldest grandson queen is not recorded in the official history. Some TV writers use the name "Sun Tzu Musashi", which may be named after her brother Sun Chang Wuji, but there is really no historical evidence to prove this. In the Sui and Tang Dynasties, when brothers and sisters were named, the word Dai was already used. Women can use it or not. Therefore, it is impossible to infer whether the name of the eldest grandson queen is "no grandson".
In 2008, published by Shanxi People's Publishing House, the book Genealogy of Emperors and Princesses in China, edited by Bai Yang, is called Grandson Innocent [7], but there is no such thing as "Grandson Innocent" in the Taipei edition. It is unknown whether the source of Innocent Sun Tzu was added by Shanxi People's Publishing House or Bai Yang.