He treats her as a pawn, a pawn to protect his beloved woman
On the surface, she is infinitely beautiful and favored; in fact, she cannot get the love of her lover, and faces loneliness and all the palace intrigues alone.
In his heart, she had a humble status, so he did not hesitate to hurt her
Because of him, she suffered humiliation and her heart was filled with holes, so she left him with a broken heart.
She gave up on him, but her heart still needed time. Until he was hurt again, she gave up on him completely without any nostalgia
After she left, he realized that his heart had also left with her, but he could not find her.
He found her, but she was beside the emperor of a neighboring country. She didn't have the deep affection for him in the past, but only endless indifference.
It wasn't until later that he discovered that the real lowly person was him...