Cultural heritage is conceptually divided into tangible cultural heritage and intangible cultural heritage. Cultural heritage includes material cultural heritage and intangible cultural heritage. Material and cultural heritage is a cultural relic with historical, artistic and scientific value; Intangible cultural heritage refers to various forms of traditional cultural expressions that exist in intangible forms and are closely related to people's lives and passed down from generation to generation. Since 2006, the second Saturday in June has been China Heritage Day. Material and cultural heritage includes immovable cultural relics such as ancient ruins, ancient tombs, ancient buildings, cave temples, stone carvings, murals, important historical sites, representative buildings, and movable cultural relics such as important physical objects, works of art, documents, manuscripts, books and materials in various periods in history; And famous historical and cultural cities (blocks, villages and towns) with outstanding universal value in architectural style, uniform distribution or combination with environmental scenery. Intangible cultural heritage includes oral tradition, traditional performing arts, folk activities, rituals and festivals, folk traditional knowledge and practice about nature and the universe, traditional handicraft skills and cultural space related to the above-mentioned traditional cultural expressions. The concept of cultural heritage is divided into tangible cultural heritage and intangible cultural heritage. Cultural heritage includes material cultural heritage and intangible cultural heritage. Material and cultural heritage with historical, artistic and scientific value; Intangible cultural heritage refers to all kinds of intangible existence, which are closely related to people's lives and handed down from generation to generation. Since 2006, the second Saturday of June is chinese heritage Day. Material and cultural heritage, including ancient sites, ancient tombs, ancient buildings, cave temples, stone carvings, murals, important historical sites in modern times, and immovable heritage, historical objects, artworks, documents, manuscripts, books and materials representing modern buildings. Movable heritage; And their architecture, their homogeneity or their integration with the landscape of historical and cultural cities (blocks, towns and villages) with outstanding universal value. Intangible cultural heritage, including oral traditions, traditional performing arts, folk customs, ceremonies and festivals, knowledge of nature and the universe, traditional folk practices, traditional handicraft skills, traditional cultural expressions and related cultural spaces.