NO!

Vietnam and majority of other Asian countries are considered a high-context society. That is our culture, “referred to as collectivistic, or interdependent… and are hierarchical and traditional societies in which the concepts of shame and honor are much more important than they are in low-context societies.” The Vietnamese dislike direct confrontation and for the most part avoid expressing a clear “no.” Evasion and inaccuracy are preferred in order to keep appearances pleasant. There is a danger of losing face simply by not reaching an agreement with another person or group, if that was the goal.