She is Princess Qionghua of the Great Zhou Dynasty, and he is General Gu of the Great Zhou Dynasty.
She loves him and he loves her, but they can't be together.
That year, the sky was filled with flowers, and they knew each other and fell in love.
That year, the sky was full of flowers, but he personally sent her off to get married.
That year the sky was full of flowers, and all he waited for was the news of her death.