Gong Hao is a palace maid,
Gong Hao is the maid of His Highness Ninth Prince.
Gong Hao is the personal maid of His Highness the Ninth Prince, and it is her duty to protect His Highness the Ninth Prince, even after her death.
Later, Gong Hao died,
Gong Hao is alive again,
But Gong Hao's life was not as good as the Ninth Prince's.