This paper is about the integration process of a group of Vietnamese who have been in France for more than thirty years. It appears through the various interviews that this process which is an endogenous construction depends upon the various political, historical and social situations which are specific to this 1955-1970 immigration. This emigration was at the time deliberate and temporary. It was involving young adults coming to France to acquire high level degrees which would help them eventually to become potential leaders of a new Vietnam. Actually, things turned out differently. Most of the time, they acquired good degrees and with a favourable employment situation, they settled down in France. In spite of all their winning cards and a good social integration, they illustrate the impossible transculture process for the first generation of these immigrants by some difficulties to become a “French Man”.