classification of collectibles Shi Gensheng divided private folk collections in China into four categories: natural history, artistic history, humanistic history and popular science history. Natural history includes insect specimens, marine life and specimens, rain flower stones, strange stones and wing paintings, that is, all kinds of objects in nature are the main ones; Art history includes cigarette labels, smoking utensils, sparks, micro-carvings, tea sets, porcelain carvings, arts and crafts, calligraphy and painting, etc. Humanities and history are mainly books, newspapers, materials, folk customs and other items; Popular science history includes computing tools, clocks and watches, keys, wine storage and so on. This classification has some merits because of its great inclusiveness, but it is limited to private collections rather than collections. How to scientifically classify collections is an urgent task, because it is very important to the development of collection science. This book classifies the collections as follows: (1) Cultural relics, including historical relics, (ancient human and biological) fossils, physical materials of ancient buildings, calligraphy and painting, tablet stickers, rubbings, sculptures, inscriptions, costumes, utensils, folk works of art, stationery, recreational supplies, theatrical props, arts and crafts, revolutionary cultural relics and foreign cultural relics. Although modern objects are not cultural relics, they can be incorporated into the above subcategories, except those listed separately below. The items listed above all contain many contents, such as gold and silver utensils, tin and lead utensils, lacquerware, funerary wares, utensils, furniture, fabrics, carpets, clocks, hookahs, fans, etc. Arts and crafts include feeder, enamel, purple sand, wood carving, tooth horn, rattan and bamboo ware, silk reeling, and others. (2) Jewelry, famous stones and ornamental stones, including jade diamonds, various inkstones and Yin Shi, as well as exotic stones and ornamental stones, are mainly natural ones that have not been carved manually. (3) Coins, including ancient coins of past dynasties and currencies of countries in the modern world. (4) Stamps, including stamps from all over the world and other collectibles related to stamp collecting. (five) literature, including books, newspapers, archives, photos, movie instructions, posters and other written materials. (6) Tickets, including tax stamps, lotteries, door tickets, commodity tickets, traffic tickets, monthly tickets, etc. (7) Trademarks, including sparks, cigarette labels, wine labels, candy paper, etc. (8) Badges, including commemorative medals, medals, badges and other badges. (9) Specimens, including animal specimens, plant specimens and mineral specimens. (ten) other categories, where the above nine categories are not included in this category. This classification is mainly based on the actual collection situation in China and the world. The above-mentioned collections not only have more fans, but also are established and can be recognized by more collectors. Of course, this classification is not static, and it will be constantly adjusted with the development and changes of the collection, in order to reflect the status of contemporary collections, have certain stability, and play a guiding and guiding role in folk collections.