Murong Rou'er

She was the Daughter of a Concubine so she was looked down on in the Murong Family. When she was young she killed her Mother because of status as a Concubine and when Murong Yan's Mother took her in she also killed her and even her own Father out of jealousy.

Murong Yan felt sorry for her and gave her ideas on how to increase the Murong Family Business profits and let her have all the credit to have a form of protection within the family.

She poisoned Master Murong and tried to pin it on Murong Yan but instead had her plans foiled when Gu Ruoyun healed him. After the Master Murong had her sent to the dungeons for punishment.