- 略知一二 lüèzhīyī'èr know a littleto know just a little; to have a rough idea
- 一二九运动 Yī'èr Jiǔ Yùndòng December 9th MovementDecember 9th Movement (1935), student-led demonstrations demanding that the Chinese government resist Japanese aggression
- 四一二 sìyī'èr 1927 coupChiang Kai-shek's purge of the communists in Shanghai on April 12, 1927
- 一二八事变 Yī'èrbā Shìbiàn January 28 Incidentthe Shanghai Incident of 28th January 1932, a conflict between Chinese and Japanese forces in Shanghai
- 四一二事变 sìyī'èrshìbiàn April 12 IncidentThe purge of communists led by Chiang Kai-shek on April 12, 1927 (often called the Shanghai Massacre), referred to as a counter-revolutionary coup or massacre in PRC literature.
- 四一二反革命政变 sìyī'èrfǎngémìngzhèngbiàn April 12 Incidentcounterrevolutionary coup of 12th April 1927, Chiang Kai-shek's coup against the communists in Shanghai
- 四一二惨案 sìyī'èrcǎn'àn April 12 IncidentThe massacre and coup in Shanghai on April 12, 1927, led by Chiang Kai-shek against the Chinese Communist Party.
