Different nations may use different body languages. So learning about languages can help us make few mistakes.
Several young Englishmen told me their interesting experiences. They are volunteer teachers. They said it was impossible for them understand all the local people there.
Mike taught in a small village in Guangxi, China. a hot afternoon, he went into a store and asked,"Do you have cold drinks?"The saleswoman said nothing. She just smiled and nodded. Mike asked her again. Still, the said nothing. When he had a conversation with his students about this experience later, his students said the saleswoman had answered him for certain: She smiled and ,which meant"YES".
Jack remembered his experience in Bulgaria, an European country. One day, he went to a restaurant that was for beef. He asked the waiter,"Do you have beef?"The waiter nodded. Jack waited quietly for a while. the waiter didn't bring beef. Later, he learned that nodding meant"NO"there.
Tom had a similar experience in India. Tom asked his students to agree disagree with his opinion. They nodded. Tom thought they with him. Later, he knew nodding meant "DISAGREE"there.