Yan Xiaoyi's murderer was the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed Yan Xiaoyi's family, making Yan Xiaoyi think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart. Yan Xiaoyi listened to the Eldest Princess and even went against the Qing Emperor for her. Even though Yan Xiaoyi had a good impression of the Eldest Princess, due to his status, he could only repay the Eldest Princess with obedience. Thus, the Eldest Princess was the murderer of Yan Xiaoyi's family.
There was no clear information on Yan Xiaoyi's killer. The search results didn't mention who Yan Xiaoyi's killer was. Therefore, based on the information provided, it was impossible to determine who Yan Xiaoyi's killer was.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess. In order to control Yan Xiaoyi, the Eldest Princess first killed his family, making him think that the Eldest Princess was his savior. However, the truth was that the Eldest Princess had destroyed his entire family and adopted him to make up for the guilt in her heart.
Yan Xiaoyi's family was destroyed by the Eldest Princess.