What is the position of luna in the bright moon of Qin Dynasty?

Luna: Qin Shihuang's most trusted teacher of Yin and Yang, proficient in astrology, with the ability to predict, but also able to control the spirit of others and the powerful destructive power of the unknown. According to official sources, she is the strongest martial arts figure in comics. The official confirmed that her weapon was silk. It seems that her surname is Ji, too. In episode 32, Emperor Taiyi said that she and Gao Yue (Ji Ruqian) are family.

I wonder if there is any blood relationship with the mother of the moon? I won't know until I make an animation later.