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Nguyen Sinh Sac was a great intellectual in the early twentieth century, his wish was to dedicate his wisdom and talent to the nation. In the context of Vietnamese society struggling to find a way to free the nation, he had to give up his official position and live in the South to live in seclusion to find the most suitable way to spread patriotic ideology. Unlike many intellectuals of the time, Nguyen Sinh Sac rose from the poor peasant class, persevered, studied hard and reached the pinnacle of knowledge. When he passed high, Nguyen Sinh Sac did not turn his back on the poor people, on the contrary, lived in harmony, wholeheartedly patriotic, loved the people, lived a noble life, endured much pain and hardship. On the basis of comparing the sources, the author boldly raised some opinions on the activities of spreading patriotic ideology, the aspiration to regain national independence, the right to self-determination for all classes of people in a particular region the number of localities in the land of Cochinchina of Nguyen Sinh Sac (1862-1929), period 1911-1929. The author hopes that the results obtained from the article will contribute to the study and study of the life and career of Nguyen Sinh Sac.