Kangxi's wisest son, who held military power but did not participate in party strife, lived to the age of 78 and had a familiar name.
There have always been countless princes who have fought for the throne, among which the Qing Dynasty's "Nine Sons and Nine Sons seize the concubine" is the most famous. There are a total of five parties in the "Nine Sons and Sisters", including the Crown Prince Yinrong, the Great Brother Yinzhen, the Three Brothers Yinzhen, the Four Brothers Yinchen, and the Nine Brothers, the Tenth Brothers, and the Fourteenth Brothers who are in the same party as the Eight Brothers.

Crown Prince Yin's birth mother was Empress Xiaochengren, who died after giving birth to the crown prince, so Kangxi transferred all his friendship for her to his son, and early on crowned Yin Rong as the crown prince, Yin Rong did not suffer any hardships since childhood, and later formed a party in the court for personal gain, and was imprisoned by Kangxi in the Zongren mansion and starved to death.
The eldest brother still had hope of ascending the throne, but he was an acute son, prematurely coveting the throne, and even cursed the prince Yin Rong, and was quieted by the Kangxi Emperor after the incident; the third brother liked to dance and ink, but by the way, he fought for the throne, and quit the throne when he found that the situation was tense.
At that time, the Eighth Brother Yinyu was the loudest and strongest, and many people thought that he would definitely be the heir to the throne, but in the end he was defeated by the resourceful Yongzheng Emperor and was imprisoned in the Zongren Mansion. In fact, in addition to these brothers, Kangxi also had a prince who also had the right to compete for the throne, but he was wise to protect himself, chose to stay away from this political whirlpool, and finally died well, he was the twelfth prince of the Kangxi Emperor - Yin Qi.
Yin Qi was born to Concubine Wan Liuha, and his mother was of a low status and could not raise children herself, but Kangxi did not send him to raise other concubines, but to Su Ma Lagu's side. Su Ma Lagu was the personal maid of Empress Xiaozhuangwen and accompanied Xiaozhuang for 50 years, although she was a maid, Xiaozhuang regarded her as a friend and a relative.
Before his death, Xiaozhuang instructed Kangxi to take good care of Su Ma Lagu, Kangxi had smallpox when he was a child, and it was Su Ma Lagu who was around to take care of him, so it was reasonable that he should treat Su Ma Lagu kindly. After Xiaozhuang's death, Kangxi was afraid that Su Ma Lagu would be lonely and unable to open her mind, so he sent the newborn Yin Qi to her side and asked her to raise her.
Su Ma Lama has a new emotional sustenance, wholeheartedly take care of Yin Qi, teach him to read and learn words, teach him the truth of being a man, the existence of Yin Qi's ears makes Su Ma Lagu's life full of joy, and Yin Qi has also grown into a pillar of talent under her care. Yin Qi was very popular with the Kangxi Emperor, and every time the Kangxi Emperor gave him a task, he could complete it brilliantly, so every time Kangxi traveled, he liked to let him accompany him, and also appointed him as the governor of Manchuria with the yellow flag.
However, Su Ma Lama had gone through several dynasties and was well aware of the fierceness of the struggle for the throne, and she was not at ease with Yin, and repeatedly told him to protect himself and not to fall into the whirlpool of the struggle for the throne. In 1705, when she was nearly ninety years old, when she was dying, she repeatedly told Yin Yu to be wise and protective, and under her teaching, although Yin Yu was capable of excellence, she always scrupulously abided by her duty and never took half a step.
In fact, when the "Nine Sons and Concubines" occurred, Yin Qi had heavy troops in his hands, plus he often accompanied Kangxi and was deeply loved by Kangxi, so he was fully capable of fighting for the throne, but he did not do this, but chose neutrality. Later, when the dust settled, Yongzheng ascended the throne and made Yin Qi the King of Lu County, but he was still jealous of the power in Yin Qi's hands, so he successively demoted him to Beizi and Zhenguo Gong, and later Qianlong ascended the throne and made him the Prince of Lu, and Yin Qi lived until 1763, at the age of 78.