Phan Boi Chau ( December 26; 1867 - October 29; 1940) was a pioneer of Vietnamese 20th century nationalism. In 1903; he formed a revolutionary organization called the Reformation Society (Duy Tan Hoi). From 1905 to 1908; he lived in Japan where he wrote political tracts calling for the liberation of Vietnam from the French colonial regime. After being forced to leave Japan; he moved to China where he was influenced by Sun Yat-Sen. He formed a new group called the Vietnamese Restoration League (Viet Nam Quang Phuc Hoi); modeled after Sun Yat-Sen's republican party. In 1925; French agents seized him in Shanghai. He was convicted of treason and spent the rest of his life under house arrest in Hue.