Secret History of Kangxi (2006)

Original title: 康熙秘史

After Suo Ni's death, Emperor Kang Xi seizes the chance to rule independently. He falls for the beautiful Qing Ge'er, unaware she is the daughter of his former rival. When nobleman Nalan Xingde intervenes to protect her, a tense rivalry begins, leading to a journey of conflict, growth, and mutual respect.