First of all, Korean national methodology laughs by clapping hands when you laugh. Furthermore, they laugh at someone next to them. When you start talking, there are words that you say first. For example, there are'no','real', and'ah'. For example, in ‘Do you think what you’re saying is correct?’, it is used like ‘No, do you think what you’re saying is correct?’ Also, when you hear something surprising, when you hear something embarrassing, when you hear something unfortunate, most of the time when you hear something you want to empathize with, most of them start with'Ah really?'. Koreans use these actions and words.