Ключевые слова: ancient, ancient buildings, ancient military defense facilities, ancient passes, asia, attractions, blue, blue sky, broken, china, collapsed, construction, cultural landscapes, culture, damaged, day, decay, desolation, destruction, detail, dilapidated, east, ecology, endangered, environment, features, forts, green, historic buildings, history, incomplete, innovation, landscapes, location, magnificent, majestic, military, monuments, mountains, nature, north, old, outdoor, rare, repair, scenery, sites, sky, summer, the ancient city walls, the concept of chinese elements, the great wall, the original ecology, the worlds cultural heritage, tourism, walls,