Hi To Linh ! We had a wonderful time in Vietnam and also in China. Thank you very much for your wonderful efforts. The organization was superb and everything worked perfectly, although there are always ideas for improvement next time. I enjoyed your company very much on the trip to halong bay and appreciate you spending so much time with our group. Huan was a wonderful guide and I would hope to get him again when we return. I will be in touch next time we have a group in Vietnam or even if we come over individually to visit your great country. Best regards