The reason why Su Xian 'er killed Xiao Mei was because Xiao Mei was actually killed by Su Xian' er disguised as Ruyan. Xiao Mei was the blood spirit of the snake spirits, one of the six heads of the snake spirits, and was Xiao Feng's twin sister. Xiao Mei deliberately released bait to lure Ruyan to kill her. Thus, Su Xian 'er killed Xiao Mei to achieve her goal.
The reason the Qing Emperor had killed Mei Zhili was because Mei Zhili had betrayed the Qing Emperor, helped the Crown Prince, and participated in the struggle between the Crown Prince and the Second Prince. The Qing Emperor believed that Mei Zhili's actions were a betrayal and unforgivable. In addition, the Qing Emperor might also be worried that Mei Zhili knew something he should not know, so he decided to kill him. The Qing Emperor's goal in killing Mei Zhili was to show the Crown Prince his might and warn the other officials not to collude with the Prince. In summary, the Qing Emperor had intercepted and killed Mei Zhili because of his betrayal and participation in the palace struggles, as well as the Qing Emperor's worry about the confidential information he knew.
There were several reasons why the Qing Emperor killed Mei Zhili. First of all, Mei Zhili, as the Jingdou magistrate, took the Qing Emperor's salary but helped the Crown Prince in the Eastern Palace. This went against the Emperor's dignity and the Qing Emperor's desire to control. The Qing Emperor could not accept this kind of betrayal, so he decided to kill Mei Zhili. Secondly, the Qing Emperor had killed Mei Zhili to show the Crown Prince his might and warn him not to collude with the court officials. At the same time, this was also a warning to the other officials not to betray the Qing Emperor. Otherwise, they would face the same fate. In addition, the Qing Emperor had killed Mei Zhili to protect his image. He wanted people to think that he was a ruler who cherished talent and old friends. This was to win over the hearts of the people. In short, the Qing Emperor killed Mei Zhili to protect his authority and control, to warn the Crown Prince and other officials, and to protect his image.
The reason why the Qing Emperor killed Mei Zhili was because Mei Zhili had betrayed the Qing Emperor and colluded with the Crown Prince. The Qing Emperor could not tolerate the collusion between the ministers and the princes, so he decided to kill Mei Zhili to show his dignity and warn the other ministers. In addition, when Mei Zhili tried Fan Xian's case, he stood on the Crown Prince's side. This was something the Qing Emperor could not tolerate.
The reason the Qing Emperor killed Mei Zhili was because Mei Zhili had betrayed the Qing Emperor and colluded with the Crown Prince. The Qing Emperor could not tolerate the collusion between the ministers and the princes, so he decided to kill Mei Zhili to show his dignity and warn the other ministers. In addition, when Mei Zhili tried Fan Xian's case, he stood on the Crown Prince's side. This was something the Qing Emperor could not tolerate.
There were many reasons why the Qing Emperor killed Mei Zhili. First of all, Mei Zhili had participated in the factional struggle between the Crown Prince and the Second Prince. This was a challenge to the Emperor's authority. The Qing Emperor would not tolerate such behavior. Mei Zhili had blatantly sided with the Crown Prince's faction. This was intolerable to the Qing Emperor. It was equivalent to a challenge to his authority. Secondly, Mei Zhili refused to speak the truth in his conversation with the Qing Emperor and mentioned many times his help to the Qing Emperor. This might make the Qing Emperor feel that he did not respect his identity as Emperor. In addition, Mei Zhili had lost his sense of propriety when interrogating Fan Xian and did not act according to the rules. On one hand, the Qing Emperor was protecting Fan Xian. On the other hand, he was dissatisfied with Mei Zhili openly challenging his authority. Finally, killing Mei Zhili could suppress the Crown Prince and balance his forces. At the same time, it was also a warning to the Crown Prince. In summary, the Qing Emperor killed Mei Zhili to maintain his authority, balance the power of the court, and warn the other officials.
Based on the information provided, it was impossible to determine why Lin Wan 'er wanted to kill Fan Xian.
The reason why Su Xian 'er betrayed the Spirit Snake was because she had fallen in love with Li Yuanfang, the captain of Di Gong's guards, and was moved by Di Gong's sincerity. After saving the emperor in Cold Light Temple, she was officially given the name Di Ruyan by Wu Zetian and became Di Gong's right-hand man. However, the search results did not provide any more detailed reasons for betraying the snake spirit.
The reason Di Renjie took Su Xian 'er in was because Su Xian' er betrayed the Snake Spirit Organization in the movie, turned over a new leaf, and helped Di Renjie solve the case. Su Xian 'er was moved by Di Renjie's sincerity during her undercover period and gradually fell in love with Li Yuanfang. Because of her betrayal and help, Di Renjie recognized her change and regarded her as his niece. Thus, Di Renjie took Su Xian 'er in out of gratitude and recognition.
There were several reasons why the Qing Emperor killed Mei Zhili. First of all, Mei Zhili's wavering attitude in the imperial court was considered one of the capital crimes. The Qing Emperor wanted to complete the great cause of unification and swallow Northern Qi, Dongyi, and other countries. The speed of the factional struggles had to be put aside. Mei Zhili's death was a warning to those ministers who secretly followed the Crown Prince's lead. They should not play any tricks and not be ignorant of the big picture. The second reason was that Mei Zhili had betrayed the Qing Emperor, helped the Crown Prince, and participated in the struggle between the Crown Prince and the Second Prince. The Qing Emperor believed that Mei Zhili's actions were a betrayal and unforgivable. In addition, the Qing Emperor might also be worried that Mei Zhili knew something he should not know, so he decided to kill him. In short, the Qing Emperor killed Mei Zhili to protect his ruling position and warn the other ministers and princes not to betray him. At the same time, it was also to grasp greater power and control the entire situation.
The search results provided did not give a clear answer as to why the Qing Emperor had killed Consort Mei. Thus, I don't know why the Qing Emperor killed Consort Mei.