Title: Wo suo zhi dao de "Bei yang san xiong"
Subjects: Generals, Biography, History, Vice presidents, Presidents, Family, Anecdotes
Places: China
People: Chuanfang Sun (1885-1935), Shichang Xu (1858-1939), Kun Cao (1862-1938)
Time periods: Warlord period, 1916-1928