challenge: What is Xikou notable for in relation to Chiang Kai-shek?
  
  A. It is the place where Chiang Kai-shek was married
  B. It is the birthplace and ancestral home of Chiang Kai-shek
  C. It is the place where Chiang Kai-shek was elected President
  D. It is the place where Chiang Kai-shek was killed
  Answer: 