Thành Thái
Hiền met Châu and Trinh early in the 20th century, and introduced Châu to the writings of Trach. Despite his revolutionary leanings, it was not until the deposing of Emperor Thành Thái by the French colonial authorities that Hien resigned his government position. He then left Vietnam to join Chau and Prince Cường Để in Japan, where they were trying to organise anti-colonial movements from abroad.