Solar panels and air conditioning on apartments next to the City Wall, Xian, China

air con apartment block apartment blocks blocks of flats buildings china chinese city life city living converting energy east asia eastern culture energy efficient energy supply environmentally friendly far east high rise blocks new china photovoltaic panels roofs rooftop shanxi solar power solar screens sun protection tenement blocks tenements urban landscape alternative energy architectural cities cityscape daytime full length full lengths horizontal housing outdoors outside progress residential accommodation rooves stock image stock photo stock photograph travel photo travel photograph travel photography travel stock travels urban scene travel travel destinations travel destination chinese culture building exterior world cultures culture national culture color image color colour scenic scenics landscapes tourism destination