Paper cutting(剪纸) can be seen in many parts of China during the Spring Festivals. People put it on windows, doors and walls for the festival. A thousand years ago, paper cutting was used for decoration(装饰). In the Tang Dynasty, women uesd paper cutting as headdresses . In the Song Dynasty, it helped make gifts more beautiful. What's more, people would feel happier when they saw paper cutting on windows, doors and walls. Now people use paper cutting to express their wishes for welcoming the New Year. There are different kinds of paper cutting in different parts of China. Pictures usually cover nearly all things, from flowers and birds to famous people. At the same time, paper cutting also appears in cartoons, magazines or TV programs. 3 This passage is mainly about ________________