This question examines the ability of students to analyze problems. A. In the Kangxi Dynasty, sourdrang dowager said, "As long as I have a small farmhouse, no one can touch my grandson ...", which expanded the scope of the small farmhouse. C. In Young Kangxi, Emperor Kangxi cleverly caught Ao Bai and executed him for 30 major crimes. Ao Bai died of old age in prison after being captured alive; D's statement is wrong. During the First World War of Zhaomodo, Galdin sentenced the army's main force to adowa, and Grdan committed suicide by taking poison in Acha A Mu Tower. So choose B.