Forcing away the imperial doctor Feng Jin Lei and changing the prescription for strengthening the body decoction was one of the moves taken by Sun Guye and Xing Neng. At that time, Feng Jin Lei already felt that someone was going to be unfavorable to King Jingyin, and he felt helpless in order to save his life, so he told the old man to return to his hometown to live in Zigui Village. Xing Neng destroyed the body-strengthening soup recipe left by Feng Jin Lei, pretending that the recipe was lost was just an excuse to use Sun Guye's recipe to poison King Jingyin, but in fact, he and Sun Guye had already planned this conspiracy.

Sun Guye and Xing Neng originally used each other to use each other's cooperative relationship, Xing Neng didn't know that Sun Guye had fornicated with Hongluo Kingdom, but who expected that one day, Xing Neng inadvertently learned that Sun Guye had dealings with the people in power in Hongluo Kingdom to betray Jingyin Kingdom, so he had a conflict with Sun Guye and decided not to join forces with Sun Guye again.

The reason why Xing Neng is like this is because although he wants to usurp power, he hates the invaders of Hongluo Kingdom very much. As early as many years ago, that is, the year when the Ding couple shot arrows into each other's hearts, the invaders of the Hongluo Kingdom killed all of Xing Neng's family, leaving him alone in the world. Since then, Xing Neng has hated Hongluo Guo to the core. When Xing Neng knew that Sun Guye had fornicated with Hongluo Kingdom, he was also gritted his teeth with hatred, but after all, he had teamed up with Sun Guye to do something unspeakable, and Sun Guye had his handle in his hands, so he didn't make any big moves against Sun Guye for the time being, he thought that even if he wanted to expose it, he would have to wait for the opportunity, so he would be patient.

But Sun Guye felt that Xing Neng knew too much about him, and thought that he must not be left in the world again. Xing can live in the world for one day, and Sun Guye can't feel at ease.

Sun Guye's subordinate Cui Cong understood the whole process, and Sun Guye wanted to kill Xing Neng, so he let Cui Cong act.

At the right time, Xing Neng was unwell and asked Hong Mian to go for treatment. After Hong Mian went for diagnosis and treatment once, he was controlled by Sun Guye and Cui Cong. Sun Guye asked Cui Cong to instruct Hong Mian to harm Xing Neng, Hong Mian was very jealous of Sun Guye and did not dare to disobey, but he was so afraid in his heart that he could not sleep and eat.

Previously, because Zhu Lianzhi revealed to Zhaolin about changing the strong body soup recipe, Sun Guye had been holding a grudge after knowing it, so he wanted to get rid of him. Sun Guye told Cui Cong that as long as he had the opportunity, he would put Zhu Lianzhi to death.

On that day, Hong Mian was instructed by Cui Cong to decoct and poison Xing Neng in the pharmacy, and the guards bought by Cui Cong stood guard outside the pharmacy. When Cui Cong learned that Zhu Lianzhi had appeared, he thought that things were not good at first, but when he heard Zhu Lianzhi say, 'I am going in to decoct medicine for His Majesty', he thought that the opportunity to get rid of him had finally come. At first, he didn't let Xiang Zhu Lianzhi enter the pharmacy, lying that he was decocting medicine for Lord Sun, and he didn't let others enter because he was afraid that others would be uncomfortable, and then he entered the pharmacy and told Hong Mian how to harm Zhu Lianzhi.

Cui Cong knew very well that Sun Guye was going to put King Jingyin to death, and he had done a lot of things for Sun Guye, even the killer Ding Datian was personally contacted by Cui Cong. When Cui Cong knew that Zhu Lianzhi was going to decoct King Jingyin, he came up with a plan to kill two birds with one stone - let Hong Mian poison King Jingyin's medicine and blame Zhu Lianzhi. King Jingyin was poisoned and died, and Zhu Lianzhi was sure to die. Cui Cong thought at the time that if he achieved his goal and even got rid of King Jingyin, Sun Guye would be overjoyed and surprised, and he would reward himself again, and when Sun Guye took power in the future, he would naturally be developed.