Great changes have taken place in China in the past twenty years because of reform and opening up. In my opinion,the main changes include the improvement of people's living standard and their attitudes toward life. Twenty years ago,Chinese people's living standard was very low. Almost all the daily necessities couldn't meet people's basic needs. Even if people had money,the chances were that there was nowhere for them to buy what they wanted. Furthermore, family members of three or even four generations lived under one roof,and sometimes parents might share the same room with their married children. Nevertheless,people can buy whatever they like nowadays. Most people live in big houses and some have their personal cars. As for the attitude towards life, in the past,people,men and women,old and young,held that they should save money for their future, so they spent less money on clothes and food let alone traveling. But now, people enjoy traveling with their family members during the holidays. They pay greater attention to the quality of life?