中国人喜欢睡午觉的习惯正在悄然改变，一些城市已开始尝试“朝九晚五”作息制，以更好地适应对外交往与开放。１９９９年１２月１日，成都高新技术开发区成为中国西部地区第一个与国际通行作息时间接轨的区域，实行“朝九晚五”作息制，即工作时间为上午９点至１２点，下午１ The Chinese people ’s habit of taking a nap is quietly changing. Some cities have begun to experiment with the “nine to five” schedule in order to better adapt to foreign exchanges and opening up. On December 1, 1999, Chengdu Hi-tech Development Zone became the first region in western China to be in line with the rest of the world’s travel schedule. The “Nine-Nights Night” schedule was adopted, that is, working hours were 9:00 am to 12:00 pm and afternoon 1