The Legend of Xiao Zhuang (2015)

As a girl, Da Yu'er, the future Empress Dowager Xiao Zhuang, was a free-spirited princess roaming the Mongolian prairie and dreaming of marrying her love, Dorgon. But as fate would have it, she married his brother, Hong Taiji, in a political alliance. She struggled between her heart's desire and her responsibility to her clan.