Don't Think About the Suffering, the Yin and Yang of Life and Death Meet Each Other

Our Chu family girls are born with yin and yang eyes, and the girls' hands and eyes can reach the sky. The elder sister observes Feng Shui, and the second elder sister calculates life and death. But I know nothing, and I am treated as a slave by my sisters at home. When the battle for the crown prince is at its fiercest, The emperor, who was seriously ill, summoned the three of us to the palace. He wants each of us three sisters to choose a prince as our husband.