At end of XIX Century and beginning of XX Century, to put down the patriotic movement of our people, the French Colonialist paid all efforts to terrorize and
arrest patriotic soldiers and labour people and construct Lao Bao prison (in 1908) to keep in prison patriotic people in the Central region. Lao Bao prison was the biggest prison in the Indochina at that time keeping patriotic people and communist soldiers of Vietnam and Lao. Regulations in this prison were very violent and harsh. They tortured prisoner to become disabled people. In the spiritual life, prisoners were not permitted to read newspapers, write letter to their families or meet their relatives… All personnel activities had to have permission from guards