Kangxi Emperor
In 1703, Yinreng's granduncle Songgotu was found guilty of attempting to murder the Kangxi Emperor, along with a series of corruption charges, and was imprisoned and died shortly afterwards. Yinreng gradually fell out of his father's favour as a result. In 1708, during a hunting expedition in Rehe, the Kangxi Emperor accused Yinreng of immorality, sexual impropriety, usurping power, and treason. Yinreng was stripped of his position as Crown Prince and imprisoned. When it was later discovered that the First Prince Yinzhi had employed lamas to cast evil spells on Yinreng, the Kangxi Emperor pardoned Yinreng in 1709 and restored him as Crown Prince. In the following three years, Yinreng's condition deteriorated and the Kangxi Emperor became convinced that Yinreng was insane. Consequently, in 1712, Yinreng was deposed again and placed in perpetual confinement.