Find an ancient romance novel

There should be a red word in the heroine's name because she used to be a killer. Later, she probably became the bodyguard of the male protagonist. In fact, the male protagonist himself had very good martial arts, but not many people knew about it. Later, the male protagonist's master forced him to marry the master's daughter and threatened him with the heroine. It seemed that only someone in the male protagonist's family could get something and marry the heroine. The male protagonist let his friend take care of the heroine. But after the heroine found out, she went to the male protagonist's wedding and snatched him over The parents of the male lead and the female lead in the previous chapter used to be a couple, but they broke up because of jealousy. Then they killed their respective partners, stole their children, raised them into killers, and let the two children duel. The male lead of the second story got together with the girl who was almost forced to marry the male lead in the first story. The girl couldn't see the male lead and kidnapped the female lead in this story. Later, the two of them fell in love and got together. Also, this heroine is very smart. What kind of palace is her mother? If it was the previous movie, it would be added that the male lead was in poor health since he was young. It seemed that he was harmed by his family. Later, he was cured by a person. The two of them became friends. He handed the female lead to this friend to take care of the male lead. Later, he learned martial arts. The master seemed to be his father's senior brother. Later, in order to protect the female lead, the male lead was forced to marry that woman. When he fought with the two brothers, they found out that the male lead knew martial arts because the woman had been kidnapped. So, it was actually a fake marriage to lure the male lead out of the second movie. Later, the male and female leads of the second movie both came out, and the female lead even helped the male lead block a sword In the second movie, the male lead had his own gang, but he was always misunderstood as a bad guy in the underworld. The female lead ruined the plans of many of the male lead's gangs.(The male protagonist's gang was in a bad place, so he needed to survive outside. But the female protagonist thought that they were going to do bad things.) So the male protagonist kidnapped the female protagonist. On the way, others found out that someone misunderstood the female protagonist. The male protagonist almost killed those people. In the end, the female protagonist tried to help the male protagonist's gang solve some problems. Later, the female protagonist even helped the male protagonist block a sword (poisonous). The friend of the male lead in the later movie helped the female lead detoxify the poison, and her eyes recovered.