2. Containing culture: Historical sites contain rich cultural connotations, represent the unique value and charm of history and culture, and are an important part of cultural heritage.
3. Historical witness: Historical trace is the witness of historical events and facts, which reflects the development and changes of human society and has important historical value and significance.
4. Touch history: Historical traces can make people feel the heaviness and massiness of history through touch, feeling and experience, and enhance their cognition and understanding of history and culture.
5. Civilization Heritage: Historical relics are the heritage of human civilization, representing the wisdom and creativity of human society, and are important wealth inherited and carried forward by future generations.