A. In "Kangxi Dynasty", the Empress Dowager Xiaozhuang said: "As long as I, Xiaozhuang, are here, no one can touch my grandson..." This expands the scope of Xiaozhuang's abilities; C. "Youth" In "Kangxi", Emperor Kangxi cleverly captured Oboi and executed him for 30 major crimes. After Obai was captured alive, he died of old age in the place of imprisonment; D.'s statement was wrong. In the battle of Zhaomodo, Galdan ordered the main force of the army to be completely wiped out, and Galdan committed suicide by taking poison in the area of ??Acha Amutatai. So choose B.