Last year,people in Sichuan suffered from a catastrophe.A sudden violent change in the earth's surface broke out in a twinkling.It was the world-shaking Wenchuan earthquake.Millions of housees were ruined and thousands of people got killed in it for an instant.None of those who were there at that time and survived it luckily were brought to deep grief,including people engaged in industry or project from every parts of the country,tourists from home and abroad,visitors on business for their official affairs and on private buisiness to visit their relatives and friends.