One and Only (2021)

Zhou Sheng Chen, raised by his brother the Emperor, becomes a loyal and skilled general. Cui Shi Yi, betrothed to the Crown Prince since birth, loses her voice and sees her former fiancé become a child Emperor. Returning to the capital amidst political unrest, Zhou Sheng Chen finds himself entangled with the Cui family when the Empress Dowager Regent changes Cui Shi Yi's betrothal to a sickly young companion of the Emperor. Zhou Sheng Chen takes Cui Shi Yi as his disciple to ease tensions between their families, and she is sent to Zhou Manor in the Western State. Despite their differences, a bond forms between them, but their relationship is strained by duty and the ongoing palace power struggles. (Source: MyDramaList) ~~ Adapted from the novel "One Life, One Incarnation – Beautiful Bones" (一生一世美人骨) by Mo Bao Fei Bao (墨宝非宝).