"In (the twenty-third year of Zhenguan) ... May ... the emperor (Taizong) collapsed in the temple at the age of fifty-three." (Old Tang Book). Consider the problem of nominal age: Li Shimin was born in 65438+ February and died in May, at the age of two, so:
627+23-1= 649,649-51= 598, so Emperor Taizong should have been born in 598 AD.
"(Zhenguan) was ten years old in June, and (Grandson Queen) died in Li Zhengtang at the age of thirty-six" (Old Tang Book). The tenth year of Zhenguan was in 636 AD, but she was actually thirty-five, so the eldest grandson should have been born in 60 1 year.
In addition, the eldest grandson of the queen was born at the age of thirteen in Taizong (Old Tang Book). This is still a nominal age (the date is unknown, unless these are also two nominal ages ...), so they should get married in 6 13 AD.
This is the Chronicle of Emperor Taizong in the old Tang Dynasty:
/f？ kz=250682586
This is the biography of Emperor Taizong in the New Tang Dynasty:
/f？ kz=250656940
This is a history book about the eldest grandson queen, the old and new Tang books, etc. , from soup to nuts:
/f？ kz=549727895