The masterminds behind the assassination of Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess.

There were three people behind the assassination of Fan Xian on Niulan Street. They were the Second Prince, the Eldest Princess, and Lin Gong. He didn't know who exactly it was.
There were three people behind the assassination of Fan Xian on Niulan Street. They were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was the instigator of the Niulan Street assassination. He had arranged for Cheng Jushu to assassinate Fan Xian because he did not want Fan Xian to rob the Eldest Princess of the palace treasury and marry Lin Wan 'er. The Second Prince and the Eldest Princess also had a motive to kill Fan Xian. The Second Prince did not want Fan Xian to control the palace treasury, and the Eldest Princess wanted to eliminate all threats to assist the Second Prince in ascending the throne. Thus, the masterminds behind the assassination of Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess.
There were three people behind the assassination of Fan Xian on Niulan Street. They were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was the instigator of the Niulan Street assassination. He had arranged for Cheng Jushu to assassinate Fan Xian because he did not want Fan Xian to rob the Eldest Princess of the palace treasury and marry Lin Wan 'er. The Second Prince and Eldest Princess also had a motive to kill Fan Xian. Thus, the mastermind behind the assassination of Fan Xian on Niulan Street was one of Lin Gong, the Second Prince, and the Eldest Princess. It was still unclear who it was.
In Joy of Life, the people who wanted to assassinate Fan Xian were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was Lin Wan 'er's brother. He had arranged for Cheng Jushu to assassinate Fan Xian. 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 help the Second Prince ascend the throne and needed to remove all obstacles. Thus, Lin Gong, the Second Prince, and the Eldest Princess were all people who wanted to assassinate Fan Xian.
In Joy of Life, the people who wanted to assassinate Fan Xian included Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong 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 help the Second Prince ascend the throne and needed to remove all obstacles.
The people who wanted to assassinate Fan Xian in Joy of Life included Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong 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 help the Second Prince ascend the throne and needed to remove all obstacles.
In Joy of Life, the people who wanted to assassinate Fan Xian were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong 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 help the Second Prince ascend the throne and needed to remove all obstacles.
In Joy of Life, the person who wanted to assassinate Fan Xian was Lin Gong. Lin Gong had been instructed by the Eldest Princess Li Yunrui. He believed that Fan Xian should not control the wealth of the palace treasury. In addition, the Second Prince and Eldest Princess also participated in the plan to assassinate Fan Xian. The Second Prince did not want Fan Xian to manage the palace treasury, and the Eldest Princess had many reasons. The Eldest Princess actually supported the Second Prince. She did not want Fan Xian to interfere in the matters of the throne. At the same time, she did not want Fan Xian to marry Lin Wan 'er. Thus, it could be concluded that Lin Gong, the Second Prince, and the Eldest Princess were all the masterminds behind Fan Xian's assassination.
Lin Gong's assassination of Fan Xian was ordered by the Eldest Princess, Li Yunrui. The Eldest Princess did not want Fan Xian to manage the palace treasury and did not want Fan Xian to marry Lin Wan 'er. Lin Gong was the murderer ordered by the Eldest Princess to plot the assassination on Niulan Street. Fan Xian was seriously injured in the assassination, but he did not die. Fan Xian's grandmother, old lady Fan, had also blocked other assassins. Fan Xian's enemies included the Second Prince and the Qing Emperor. The Qing Emperor was Fan Xian's biological father, but he was not friendly to Fan Xian. The reason Fan Xian was assassinated was because he was the illegitimate child of the Qing Emperor and Ye Qingmei. In order to stabilize the imperial power, the Qing Emperor felt threatened by Fan Xian.
In " Celebrating Years," the mastermind behind Fan Xian's assassination was the Eldest Princess Li Yunrui and Lin Gong. The Eldest Princess did not want Fan Xian to take over the palace treasury, and Lin Gong was the Eldest Princess 'subordinate. Lin Gong believed that Fan Xian could not truly control the wealth of the palace treasury because his enemy was the future Emperor and Crown Prince. Lin Gong had joined the Crown Prince and the Eldest Princess. For the sake of his family, he wanted to live for his family. When the Qing Emperor decided to let Lin Wan 'er and Fan Xian marry, things changed. However, Lin Gong did not know the truth about Fan Xian's background. Thus, the Eldest Princess and Lin Gong joined forces to assassinate Fan Xian.