You remember the May Fourth Movement of China in 1919 in Peking. There was a demonstration against the Peking warlord government. Nine years later, in 1928, Chiang Kai-shek set up his National government in Nanking. It only took nine years.
您還記得一九一九年北平的五四運動，學生示威遊行反對北平的軍閥政府，九年後，也就是西元一九二八年，蔣中正就在南京成立了國民政府，前後只花了九年的時間。