Tom, an American, went to a Chinese home for the first time. He was offered some tea. Just when the first cup was about to finish, more tea was added. He drank the second cup. Then the cup was filled the third time. Then he drank it, then ⋯ until he was quite full. Tom was totally confused by the way of entertaining.Question: 1. Why was Tom totally confused? 2. What advice would you give Tom in this situation?