There was no clear answer to the question of who wanted to kill Fan Xian at Niulan Mountain. The search results mentioned that the masterminds behind the assassination of Fan Xian at Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess, but did not mention the connection between Niulan Mountain and this incident. Therefore, according to the information provided, I don't know who in Niulan Mountain wants to kill Fan Xian.
The masterminds behind Niulanshan's attempt to kill Fan Xian were Lin Gong, the Eldest Princess, and the Second Prince. Lin Gong was Lin Wan 'er's brother and also the Crown Prince and Eldest Princess's man. He had arranged for Cheng Jushu to assassinate Fan Xian on Niulan Street. The Eldest Princess did not want Fan Xian to marry Lin Wan 'er, so she found Lin Gong and used him to kill Fan Xian. Thus, the masterminds behind Niulanshan's attempt to kill Fan Xian were Lin Gong, the Eldest Princess, and the Second Prince.
In " Celebrating Years," the masterminds behind the attempt to kill Fan Xian on Niulan Street were Lin Gong, the Eldest Princess, and the Second Prince. Lin Gong was Lin Wan 'er's brother and also the Crown Prince and Eldest Princess's man. He had arranged for Cheng Jushu to assassinate Fan Xian on Niulan Street. The Eldest Princess did not want Fan Xian to marry Lin Wan 'er, so she found Lin Gong and used him to kill Fan Xian. The Second Prince also participated in this plan.
In " Celebrating Years," the masterminds behind Niulan Street's attempt to kill Fan Xian were the Second Prince, the Eldest Princess, and Lin Gong. Lin Gong was the one who had obtained the token to control Cheng Jushu and had smuggled him into the city. The Second Prince did not want Fan Xian to be in charge of the palace treasury. The Eldest Princess seemed to be on the Crown Prince's side, but in reality, she really supported the Second Prince. The three of them eventually planned the assassination of Fan Xian on Niulan Street.
The masterminds behind the assassination of Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was the one who had obtained the token to control Cheng Jushu and smuggled him into the city. The Second Prince did not want Fan Xian to take charge of the palace treasury, so he wanted to assassinate Fan Xian. The Eldest Princess had also participated in the plan to assassinate Fan Xian. Thus, the masterminds behind the assassination of Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess.
In " Celebrating Years," the masterminds behind the attempt to kill Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess.
In " Celebrating Years," the masterminds behind the assassination of Fan Xian on Niulan Street were the Second Prince, the Eldest Princess, and Lin Gong. Lin Gong obtained the token to control Cheng Jushu and secretly transported him into the city. In the end, Cheng Jushu assassinated Fan Xian. The Second Prince assassinated Fan Xian because he did not want Fan Xian to manage the palace treasury. The Eldest Princess did not want Fan Xian to manage the palace treasury, nor did she want Fan Xian to marry her sister, Lin Wan 'er. Lin Gong had tried to assassinate Fan Xian to prevent Lin Wan 'er from marrying him. In short, there were three people behind the assassination of Fan Xian on Niulan Street. They were the Second Prince, the Eldest Princess, and Lin Gong.
In " Celebrating Years," the masterminds behind Niulan Street's attempt to kill Fan Xian were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was Lin Wan 'er's brother and also the Crown Prince and Eldest Princess's man. He had arranged for Cheng Jushu to assassinate Fan Xian on Niulan Street. The Eldest Princess did not want Fan Xian to marry Lin Wan 'er, so she found Lin Gong and used him to kill Fan Xian. The Second Prince also participated in this plan.
The masterminds behind the assassination of Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was the one who obtained the token to control Cheng Jushu and smuggled him into the city. The Second Prince assassinated Fan Xian because he did not want Fan Xian to take charge of the palace treasury. The Eldest Princess wanted to assist the Second Prince in ascending the throne and needed to eliminate all threats. The three of them had jointly arranged the assassination on Niulan Street.
In " Celebrating Years," the masterminds behind Niulan Street's attempt to kill Fan Xian were Lin Gong, the Eldest Princess, and the Second Prince. Lin Gong was Lin Wan 'er's older brother, and also the Crown Prince and Eldest Princess's man. He had arranged for Cheng Jushu to assassinate Fan Xian on Niulan Street. The Eldest Princess did not want Fan Xian to marry Lin Wan 'er, so she found Lin Gong and used him to kill Fan Xian. The Second Prince also participated in this plan.
The masterminds behind the attempt to kill Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess.