What are the names and backgrounds of the two girls in Zhen Xuan Biography?

Huanbi is one of the main characters in the TV series "The Queen of the Palace".

Huanbi is Zhen Xuan's half-sister, who married a servant girl. She was beautiful, but she tried to seduce the emperor because of her life experience. He secretly burned paper money in the palace and was caught by Cao Guiren, but once betrayed Zhen Xuan. (He didn't really hurt Zhen Xuan) He was caught by Zhen Xuan. After knowing this, he never gave up on her and lived with her for life and death. When the Zhen Xuan paper man in Prince Guo's sachet was accidentally discovered by the emperor, in order to save Zhen Xuan and Prince Guo, she lied that it was her gift to Prince Guo. Later, she was married by the emperor to Prince Guo, and was named Zhen together with Meng Jingxian. Devoted to Prince Guo, he was deeply jealous of Meng Jingxian's pregnancy, and poisoned Fei Jing on the pretext that Meng Jingxian knew the secret of Prince Guo and Zhen Xuan. When King Guo Jun died, she also committed suicide.

Liu Zhu is one of the main characters in the TV series The Queen of the Palace.

He was Zhen Xuan's maid, and he died to save Zhen Xuan. Be loyal to God. Liu Zhu was stabbed to death with a knife, which is a great tragedy in Harem.