British tourist John said to his tour guide Xiao Li, "You are beautiful". Xiao Li answered modestly, "Where, where!" John froze, looked at Xiao Li again, and said, "The whole body is beautiful, Especially the eyes are beautiful. ". This story tells us. ['Because you do not understand the meaning of conventions in some idioms, it may cause poor information in verbal communication.', 'Even foreigners who speak Chinese well may make some jokes when speaking Chinese.', 'There is a big difference between English and Chinese in grammatical structure.', 'Oral language is less precise than written language in expressing meaning.']