【正确答案】In China, the two big annual public holidays National Day and New Year are usually the occasions when a great number of people choose to go out traveling and also the time unprecedented traffic jams happen. When the tourists sights are crowded with a mass of tourists and people get held up in the congestion, traveling is no longer such an appealing thing to do. Consequently, some people has appealed for the public holiday in May to be lengthened so as to spread the strain. Furthermore, a commentary by Xinhua News Agency even calls for the establishment of a proper paid leave system. I am with the commentary here, for as far as I know many people have saved their traveling for the big annual public holidays due to lack of proper enforcement of regulations about vacation system. What is meant here is that even the public holiday in May is lengthened, it is of not much help in changing the situation when many people go out traveling at the same time. Therefore proper paid leave system holds the key to the problem.