Love Between Mountains and Rivers: the Peerless Princess

A wise emperor, a young emperor. He originally loved someone but chose someone else by mistake. He could have made a beautiful marriage, but he couldn't help but laugh at the fate. A charming girl, carefree, making wine with green plums, but she is involved in a palace battle The daughter of a powerful official of the Qingluan Dynasty and the son of an emperor, what kind of love music can the two finally compose?