Today i saw many people holding the South Korean flag,i search it.It was beause Samiljeo.

Samiljeol (삼일절), or March 1st Movement Day, is a national holiday in South Korea commemorating the independence movement against Japanese

colonial rule on March 1, 1919. On this day, Korean activists proclaimed the Declaration of Independence, sparking nationwide protests. Though suppressed by Japan, the movement fueled Korea’s struggle for independence. Today, South Koreans honor the patriots through ceremonies, flag displays, and educational events. The holiday symbolizes national pride, resilience, and the fight for freedom, playing a key role in Korea’s modern history.