Ninth issue. According to the related copyright official website, why do people drink is the ninth issue of "20021China Debate Friends Competition Final". China Debate Friends Competition, referred to as China Debate Friends Competition or Friendship Competition for short, is an international debate competition sponsored by the debate team of Sun Yat-sen University. Its feature is to invite retired debaters from all the debate teams to participate in it, so as to break the restriction of student status and show the highest level of debate in China.