Who is Ganlong's mother?

The mother of Emperor Gaozong Qianlong in Qing Dynasty was Empress Xiao (1692—1777) and Niu Lulu, born in 1692,1.5, the daughter of Zhu Ling, a four-grade etiquette officer.

At the age of thirteen, he entered Yong Wangfu and was named Gege, which is the official residence of Yong Wang Yin Zhen. Emperor Qianlong was born in Li Hong in the 50th year of Kangxi. In the first year of Yongzheng, she was named Xi Fei, and in the eighth year of Yongzheng, she was named Xi Guifei. In the 13th year of Yongzheng, his son Li Hong (Gan Long) ascended the throne and was honored as the Empress Dowager and the emblem was the Queen of Chongqing. He died on March 2, 777 (23rd day of the first month in the 42nd year of Qianlong) and was buried in Dongling, Thailand. Qiaocheng: Filial piety, kindness, biography of Kang Huidun, Cheng Huiren, Mu, and Empress Sheng Xian.