They are all concubines, so of course they choose the future emperor.

Jiang Wanyue was reborn. Jiang Wanyue entered the Prince Jing's mansion as the daughter of a guilty minister and became one of the many women around him. The cold and deep princess, the pure and beautiful Bai Yueguang, the side wife who saved his life... Jiang Wanyue fought her way out of this group of women and climbed step by step from the favorite concubine of Prince Jing to the position of favorite concubine and queen mother. Everyone said that she was greedy for profit and forgot her loyalty. She abandoned her fiancé and joined the arms of Prince Jing. She would do anything for power, even abandoning her husband and son. But... so what? You can fight for this position? I can't fight for it? You can sit on this dragon throne? I can't sit on it? I want to prove to the world that I, Jiang Wanyue, am not inferior to you...