Qing Dynasty: In ancient times, since the Tang Dynasty, monarchs used the names of senior officials to address their subjects.
Ai Qing: It's a title of respect from a monarch to a minister, showing respect and closeness. More common in story novels and modern film and television dramas. It is rare in ancient literature.
Love is love.
Ji: The ancient address for women.
Love yourself: spoil my concubine and love a woman.
From the above, if you call her Aji, she must be the woman you love. If she calls you Ai Qing, then you become her servant. She is a queen (like Wu Zetian in ancient times), which means respecting the great. You must listen to her!