Kangxi said this, however, in the "Compilation of The Decrees of the Yongzheng Dynasty han Dynasty", it is recorded that when Kangxi deposed the throne of Yin Rong for the second time, he deliberately summoned the princely ministers to surrender, saying: "After ten thousand years, the eldest brother (Yin Zhen) and the second brother (abolished prince Yin Rong) must not be retained, and if there is any one left in Er, that is, a person who disturbs the country", to the effect that after my death, the eldest brother (Yin Zhen) and the second brother (abolished prince Yin Rong) cannot stay, and if there is disobedience, they are regarded as traitors.
However, we only need to know that before Kangxi died, he summoned The Cabinet Student Marche into the palace and issued another edict: "Abolish the crown prince Yun Rong, the emperor's eldest son Yun Yu is not good, according to the previous detention, enrich his clothing and food, in order to live his life", to the effect that the crown prince Yun Rong and the emperor's eldest son Yun Yu were sexually rebellious, and after I died, I could not release him, and I needed to continue to be imprisoned, so that he could not be clothed and fed without worries until he was old.
In this way, Yongzheng did not disobey the Holy Order, because Kangxi had already left a will before his death, asking his successors to treat Yin Zhen and Yin Rong kindly, not to return their freedom, but to let them live without worry, but also to have no worries about food and clothing.
To put it bluntly, at that time, Kangxi said that he would not keep Yin Zhen and Yin Rong, which was completely angry, but it should not be true.
But then again, at that time, Yin Zhen and Yin Rong did go too far, and it was common for Kangxi, who was a father, to be angry. First of all, Yin Zhen, as the eldest son of the emperor, should have done a good job as an example for the eldest brother, let the brothers live in harmony with each other, make the father kind and filial piety, the family and everything prosperous, but he did not do this. For the sake of the throne, he took the lead in destroying the feelings between his brothers, and even disregarded the brotherly feelings, and actually asked Kangxi to say that he would clean up the portal for him and kill Yin Rong. Just imagine, how vicious this is, Yin Rong is his brother, he can actually make up his mind, saying that he killed his brother. Such an abominable act, How could Kangxi not be angry, and it is no wonder that Kangxi would directly rebuke Yin Zhen as a "traitor and thief", after all, he intends to kill his brother, which is really not a human thing.
As a son, even if the father has all kinds of mistakes, he should not commit the above crimes, and even more want to harm the father's behavior of seizing the throne. Yin Rong really wanted to be an emperor, more than twenty years of princehood, he was tired of being a crown prince, he was afraid that he could not survive Kangxi, he could only be a crown prince in his lifetime, so he wanted to become an emperor quickly, so he did not hesitate to premeditate the usurpation of the throne, and there was a plan to kill his father. Therefore, how could Kangxi not be angry with such an act, and how could he not say the words of not leaving him behind?
Of course, no matter what Yin Zhen and Yin Rong did, they were always Kangxi's sons, and the tiger poison did not eat children, so how could Kangxi bear to kill his own children? He couldn't bear it, he still cared about them, so before he died, he specially instructed the successor king to be kind to the two of them and let him spend the rest of his life without worry. Of course, Kangxi was also afraid that his two sons would do stupid things in the future and eventually lose their lives, so he also specially blessed the new jun not to release them and imprison them for life.
In addition, it is added that in fact, Yongzheng did not kill them, not necessarily because of Kangxi's will, so that he should not kill them.
To tell the truth, Yongzheng did not kill them, only because they were no longer a threat, and they could not pose any threat to his throne, so Yongzheng decided to follow Kangxi's advice and let them live the rest of their lives without worry. It should be known that Yin Zhen and Yin Rong lost the power to compete for the throne in the early days of the Ninth Son's conquest of the concubine, and their power collapsed after Kangxi announced that they would be imprisoned. First Yin Zhen was ordered to be imprisoned in the forty-seventh year of Kangxi, the first prince to lose the opportunity to take a wife, and then Yin Rong was also ordered to be imprisoned in the fifty-first year of Kangxi.
And we must know that Kangxi died in the sixty years of Kangxi, and during these nine years, Yin Zhen and Yin Rong spent in captivity, so they had no chance to develop their own forces at all, and their forces had long been divided up by other princes in nine years. In this way, if you ask a prince who is not a threat to himself, why would Yongzheng kill them in one fell swoop? Killing them would not be of any benefit to Yongzheng, but would make him bear the notoriety of disobeying the Holy Orders, which was not worth the loss.