The mastermind behind Fan Xian's assassination

The masterminds behind Fan Xian's assassination 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 control of the palace treasury. The Eldest Princess might have wanted to kill Fan Xian to cut off the possibility of the Qing Emperor letting Fan Xian inherit the palace treasury. Thus, Lin Gong, the Second Prince, and the Eldest Princess all had the motive and action to instigate Fan Xian's assassination.

The masterminds behind Fan Xian's assassination were Lin Gong, the Second Prince, and the Eldest Princess.

The masterminds behind Fan Xian's assassination 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 control of the palace treasury. The Eldest Princess might have wanted to kill Fan Xian to cut off the possibility of the Qing Emperor letting Fan Xian inherit the palace treasury.

The masterminds behind Fan Xian's assassination 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 control of the palace treasury. The Eldest Princess might have wanted to kill Fan Xian to cut off the possibility of the Qing Emperor letting Fan Xian inherit the palace treasury. Thus, Lin Gong, the Second Prince, and the Eldest Princess all had the motive and action to instigate Fan Xian's assassination.

The masterminds behind Fan Xian's assassination 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 control of the palace treasury. The Eldest Princess might have wanted to kill Fan Xian to cut off the possibility of the Qing Emperor letting Fan Xian inherit the palace treasury.

The masterminds behind Fan Xian's assassination 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 control of the palace treasury. The Eldest Princess might have wanted to kill Fan Xian to cut off the possibility of the Qing Emperor letting Fan Xian inherit the palace treasury.

The masterminds behind Fan Xian's assassination 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 control of the palace treasury. The Eldest Princess might have wanted to kill Fan Xian to cut off the possibility of the Qing Emperor letting Fan Xian inherit the palace treasury.

The masterminds behind Fan Xian's assassination 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. The information was extracted from multiple search results, which mentioned the motives and actions of these people. Thus, based on the information provided, it could be concluded that the masterminds behind Fan Xian's assassination were Lin Gong, the Second Prince, and the Eldest Princess.

The masterminds behind Fan Xian's assassination were Lin Gong, the Second Prince, and the Eldest Princess. These three people had jointly planned the assassination of Fan Xian on Niulan Street. 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, Lin Gong, the Second Prince, and the Eldest Princess were the masterminds behind Fan Xian's assassination.

The mastermind behind Fan Xian's assassination in Danzhou was controversial. Different documents mentioned different people, including Lin Gong, the Second Prince, the Eldest Princess, and Chen Pingping. However, there was no clear evidence to point out who the mastermind was. Therefore, according to the information provided, I am unable to determine who was behind Fan Xian's assassination in Danzhou.