三藩之乱
In 1669, the Kangxi Emperor had Oboi arrested with the help of his grandmother Grand Dowager Empress Xiaozhuang, who had raised him. and began taking personal control of the empire. He listed three issues of concern: flood control of the Yellow River; repair of the Grand Canal; the Revolt of the Three Feudatories in south China. The Grand Empress Dowager influenced him greatly and he took care of her himself in the months leading up to her death in 1688.