Dear Mai Anh (I guested), Just finished a hard working day. Nobody forced that if my nick is in Vietnamese, it would be prohibited me to communicate in English. Also, nobody can force to discuss with me in English only. Pls feel free to open your mind because this may possibly come from your thinking. Sometimes our thinking is binding our actions we do not know, then we complain other people due to that reason. Warmly welcome in Vietnamese speaking, but still motivate to communicate in English if possible. This is also the way to learn and improve your English skill
If you need to translate this version into Vietnamese, I think that Goog translation will possibly support your without claiming your fee