Koukyuu no Nakanai Tori wa Koutei ni Mederareru

Deep within the inner court of Xiang, Yue Hua, voiceless and isolated, endures relentless bullying from rival consorts who all compete for the favor of Jing, the young emperor who once saved the nation. Her days are bleak until fate intervenes, when the emperor suddenly takes notice of her. She bears an uncanny resemblance to the lover he lost in a past life. Everything begins with a fateful encounter in this Cinderella story set in a Chinese harem! (Source: MangaPlaza)