What is the significance of national key cultural relics protection units?

China is an ancient civilization with a long history and rich cultural heritage. Cultural relics are an important part of cultural heritage, which contains the unique spiritual value, thinking mode and imagination of the Chinese nation and embodies the vitality and creativity of the Chinese nation. Protecting and making good use of cultural relics is of great and far-reaching significance for inheriting and carrying forward the excellent national cultural traditions, enhancing national unity and safeguarding national unity, enhancing national self-confidence and cohesion, and promoting the construction of socialist spiritual civilization. National Cultural Heritage Administration) Among provincial, municipal and county-level cultural relics protection units, those with great historical, artistic and scientific value are selected as national key cultural relics protection units, or directly determined and reported to the State Council for approval and promulgation. The national key cultural relics protection unit is the highest protection level of immovable cultural relics approved by People's Republic of China (PRC), that is, the national cultural relics protection unit. Cultural heritage is an important symbol of the historical and cultural achievements of a country and a nation. It is not only of great significance to study the evolution of human civilization, but also plays a unique role in showing the diversity of world cultures, which are the common wealth of mankind.