Political map of East Asia and the Western Pacific on 29 Dec 1928 (China's Nanjing Decade: Northeast Flag Replacement), showing the following events: Shanxi Warlord Yan Xishan takes Beijing from Fengtian clique on behalf of the Kuomintang; Huanggutun Incident; Xinjiang warlord Yang Zengxin declares for Chinese Nationalist Government; Presidency of Chiang Kaishek; Northeast Flag Replacement.