The Great Wall is not merely an ancient structure; it is primarily a historical site. Site protection focuses on preserving existing sites, rather than reconstructing them. As a result, the preservation of the Great Wall should adhere to three principles. First, safeguard the physical structure to ensure the authenticity of cultural relics. Secondly, preserve historical information to capture the essence of cultural heritage. Thirdly, enhance construction quality to ensure the protection of the Great Wall.