Although the eldest grandson's father was Xiao Wei, the right general of the Sui Dynasty, his whole family believed in Buddhism. Therefore, the elders at home nicknamed the eldest grandson Guanyin Maid, hoping that she would grow up to be as merciful as Guanyin Bodhisattva. Only Li Shimin can call this name, and no one dares to call the eldest grandson queen that way.

In addition, the eldest grandson is tolerant, kind and compassionate, deeply influenced by Buddhist culture, and she herself is a devout Guanyin believer. When you become an emperor, your name contains the word "yes", so many names are taboo. Even Guanyin changed her name and called her Guanyin Bodhisattva directly.

Anecdotal allusions of the eldest grandson queen:

According to Tang records, in July of the fourth year of Wude (62 1), five baht was abolished and Kaiyuan was issued. Please write and make a wax sample. On 17th, Qian Jian was set up in Luoyang and Yizhou, and then the casting furnace was handed over to Qin Wang, Wang Qi and Pei Ji, who were chartered to make their own money. Since then, Kaiyuan Bao Tong has been the mainstream currency of the Tang Dynasty. Kaiyuan Bao Tong itself has another interesting place.

According to Minister Xuanzong of the Tang Dynasty, when it was waxed, it was studied for the eldest grandson of Princess Qin, leaving a nail mark. Somehow, the wax sample has not been redone, and this scratch was left on Kaiyuan Bao Tong (which was also recorded by Lu and Tang Tu in the Tang Dynasty).