Stamp collecting means collecting, sorting out, appreciating and studying stamps, so that people can get all kinds of spiritual nourishment from stamps, enrich their knowledge and cultivate their artistic appreciation ability. Today, three special hobbies are popular in the world, namely sports, tourism and stamp collecting. So far, more than 200,000 stamps with various patterns have been issued at home and abroad. These numerous stamps are dazzling art halls, vivid encyclopedias, the crystallization of human wisdom, the ocean of civilization achievements and the source of various interests. By collecting stamps, people can get rid of fatigue, cultivate sentiment and gain lessons from pleasing enjoyment. Stamp collecting is also a "window to the world" and a "window to the motherland". Through the colorful stamp "window", we can see the ever-changing changes in the world and the motherland. Stamp collecting is still a noble and beneficial cultural activity. There are many great revolutionaries, scientists, writers, kings, monarchs and presidents in the world who also like collecting stamps. For example, Engels, an outstanding revolutionary of mankind, sent stamps to support Marx's daughter Du Xi in collecting stamps; Marx also carefully took down the stamps on the envelope, dried them and flattened them, and gave them to his daughter Du Xi for collection. President Mao Zedong signed the stamp of stamp collector Yang Shaoming as a souvenir; Biologist Darwin, physiologist Pavlov, great writer Gorky and China famous writer Xia Yan are all stamp collectors. Although Mr. Lu Xun doesn't collect stamps, he often cuts out stamps and gives them to people who like collecting stamps to encourage people to collect stamps. American President Roosevelt once said according to his stamp collecting experience: "Stamp collecting can relieve our troubles, broaden our horizons, increase our knowledge and make us better citizens. At the same time, it has enriched our lives in many ways. " Collecting stamps is also collecting securities. Therefore, philatelic business has become a huge commercial activity in the world. In many countries, stamp auctions are held every year. Some countries also regard exquisite stamps as an important source of foreign exchange. Stamp companies are responsible for all stamp sales in China, but with the support of local philatelic associations, stamp collectors have also established an equal exchange place. "Stamp collectors have long knowledge and love is quite noble. Don't get angry and make money to enjoy. " This is a famous writer Lao She's inscription for collecting stamps. Lao She thinks stamp collecting is a noble hobby, not a junior college. That is, as Zhong said: "Collecting stamps is a small method, because it can cultivate temperament and broaden knowledge, and it is a noble hobby." The so-called "knowledge of stamp collectors" means that stamp collectors cultivate and stimulate an increasingly strong desire for encyclopedic knowledge in the process of collecting, appreciating and identifying stamps, so as to make themselves understand "what stamp patterns are talking about". The process of collecting stamps makes people enjoy the happiness and satisfaction of curiosity, and also promotes the development of knowledge of stamp collectors: studying various stamps and postal supplies, and studying history, science, culture, art, aesthetics, society and other stamp-related knowledge. Some also study the creation, display, exhibition and competition of group stamps. "Stamp collectors have long knowledge and love is quite noble. Don't get angry and make money to enjoy. " The popular explanation is that stamp collecting can make people increase their knowledge. This hobby is noble, but don't collect it with curiosity. It is better to appreciate than to make money, so as to cultivate the mind.