(literary) To be inconsistent or double-minded; lacking in firm character or loyalty.

World Freedom Day, a holiday formerly observed on January 23rd to commemorate the arrival of prisoners of war in Taiwan following the Korean War

(literary) you all; everyone; used by a teacher or superior to address a group of students or followers

The bombardment of Kinmen by PRC forces that started on August 23rd, 1958; also known as the Second Taiwan Strait Crisis.