This aerial photo was taken at the core landmark of the ancient city of Luoyang, Lijingmen. In the center of the picture is a Ming and Qing style city wall and gate, including an arrow tower and a city gate opening. The city wall is extended with antique gray tiles and white walls; There is a clear 'time and space boundary' inside and outside the wall - inside the city wall are traditional streets and low rise residential buildings densely packed in the old city area, while outside the city wall is the new city area, with modern high-rise buildings on both sides. Ancient and modern architecture intertwine within the same framework, with moats and trees along the roadside adding vitality to the picture. Lijingmen is the cultural entrance of the old city of Luoyang. Inside the city gate are old street shops that carry the memories of Luoyang people, while the new district outside the wall is a microcosm of the modern development of this ancient capital. "One wall divides ancient and modern" is precisely the urban temperament of Luoyang, which is "preserving the charm of the old city and expanding the pulse of the new city".