Seven students and two teachers went to the competition, "Odyssey of the Mind 2018 World Finals", in the United States from 19 May to 28 May, 2018. We stayed in Edward Hotel Chicago for the first two days and in Iowa State University for the remaining six days. Apart from the competition, we also participated in the opening ceremony, NASA lessons, creativity festival, float and banner parade, international festival and party for coaches and teenagers. During these activities, we had a great opportunity to meet people all over the world and understand different cultures of all other participants.