In the forty years of Kangxi, Soetou pleaded for retirement because of his advanced age. That year the emperor visited Henan, and the Crown Prince fell ill in Dezhou, Shandong. Kangxi ordered Suo Tuotu to serve. After the prince recovered from illness, the emperor found evidence that the prince and Suoetu conspired to usurp the throne, so in May of the 42nd year of Kangxi (1703), he ordered Zongren House to detain Suoetu in the name of the first criminal in the Qing Dynasty, and died in prison soon.
The statement of being executed is not credible, and there is no historical data to prove it, so it is still necessary to die in accordance with official records. Emperor Kangxi was kind and considerate, and Ao Bai didn't kill him, so it is more credible.