The palace treasury was an important source of finance for the Qing Kingdom. The Qing Emperor wanted to transfer the management of the palace treasury from the Eldest Princess to Fan Xian. The Eldest Princess could not bear to part with the palace treasury, so she wanted to kill Fan Xian. This was one of his goals. Her bigger goal was to arrange for Northern Qi people to come to Qing territory and kill an official who was in the limelight. Her intention was to give the Qing Emperor an excuse to attack Northern Qi.

The masterminds behind Joy of Life's Niulanshan assassination were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was the mastermind behind the Niulanshan assassination. He had arranged for Cheng Jushu to assassinate Fan Xian. His goal was to prevent Fan Xian from robbing the Eldest Princess 'palace treasury and marrying Lin Wan' er. The Second Prince and the Eldest Princess also had their own reasons for participating.
Joy of Life's real murderer was Lin Gong. Lin Gong was a member of the Prince's faction and was thought to be the mastermind behind Fan Xian's assassination at Niulan Street. His motive was not to let Fan Xian control the palace treasury and not to let Lin Wan 'er marry Fan Xian. In addition, there were some signs that Lin Gong might have a larger force behind him. Therefore, according to the information provided, Lin Gong was the real murderer behind the assassination attempt on Niulan Street by Joy of Life.
In Joy of Life's original novel, the masterminds of the Niulan Street assassination were Lin Gong, the Second Prince, and the Eldest Princess. Lin Gong was believed to be the mastermind behind Fan Xian's assassination. His motive was to prevent Fan Xian from snatching the Eldest Princess 'palace treasury and marrying Lin Wan' er. In addition, the Second Prince and the Eldest Princess also had their own reasons for participating. Thus, the mastermind behind the Niulan Street assassination was Lin Gong, the Second Prince, and the Eldest Princess.
In " Celebrating Years," 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 had 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 him. The Eldest Princess actually supported the Second Prince, so she also participated in the plan to assassinate Fan Xian. This assassination was planned by many people.
Joy of Life's real murderer was Lin Gong. Lin Gong was a member of the Prince's faction and was thought to be the mastermind behind Fan Xian's assassination at Niulan Street. His motive was not to let Fan Xian control the palace treasury and not to let Lin Wan 'er marry Fan Xian. In addition, there were some signs that Lin Gong might have a larger force behind him. Therefore, according to the information provided, Lin Gong was the real culprit behind the Niulan Street assassination.
The reason why the Second Prince and the Eldest Princess colluded to plan the Niulan Street incident to kill Fan Xian was to fight for the throne. In the novel, the Second Prince had always had a desire for the throne, and the Eldest Princess was one of his supporters. The two believed that Fan Xian might threaten their throne, so they decided to use the Niulan Street incident to kill Fan Xian to ensure that their positions were stable. The Niulan Street incident was a complicated political conspiracy. The Second Prince and Eldest Princess had used Fan Xian's intelligence to trap him, and in the end, they had successfully killed him to secure their position as emperor. In the Niulan Street incident, Fan Xian had not only suffered a life-and-death test, but he had also deeply realized the darkness and hypocrisy of politics. As a result, he became a wiser and more cautious person, laying a solid foundation for his life.
The masterminds behind the assassination at Niulan Street were Lin Gong and Wu Bo 'an. Lin Gong was the mastermind behind Fan Xian's assassination attempt on Niulan Street, and Wu Bo 'an was the strategist. They had planned the assassination together.
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 Eldest Princess 'younger brother. He had used Si Lili's identity to plot the assassination on Niulan Street. The Second Prince and the Eldest Princess were also involved. The Second Prince did not want Fan Xian to manage the palace treasury, and the Eldest Princess did not want Fan Xian to marry Lin Wan 'er. However, the specific mastermind behind the scenes had yet to be confirmed. Therefore, he could not answer this question accurately.
Joy of Life's assassination attempt on Niulan Street was planned by Lin Gong and Wu Boan. Lin Gong was the mastermind behind the assassination attempt on Fan Xian at Niulan Street, and Wu Bo 'an was his accomplice. Their goal was to stabilize the situation in the palace treasury and make the Crown Prince feel uneasy. In addition, the Eldest Princess was also considered one of the suspects of the Niulan Street assassination because she had once tried to smear Fan Xian's reputation and did not want the power of the palace treasury to fall into his hands. However, the specific details and motives behind it might need to be further understood in the series or the original work.
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 mastermind behind Fan Xian's assassination, and the Second Prince and Eldest Princess were also involved in this assassination plan. Their motive was not to let Fan Xian control the palace treasury and to stop Fan Xian and Lin Wan 'er's marriage. Thus, the masterminds behind the assassination of Fan Xian on Niulan Street were Lin Gong, the Second Prince, and the Eldest Princess.