Aerial view of Pingyao, historic walled old town with modern tall buildings in the hazy background

pingyao aerial view walled city drone shot old town shanxi china historic architecture modern buildings contrast haze urban landscape ancient city cultural heritage travel tourism cityscape traditional contemporary high angle skyline environment heritage site old and new urban planning city walls scenic view aerial photography travel destination historical site historic town urban development smog atmospheric historic architecture cityscape contrast modernity traditional buildings pingyao walled city cultural tourism historic district unesco site asia locality foggy 4k drone copy space