Ключевые слова: after work, air pollution, allergy, beijing, city, crowd, crowded, exhaustion, eye, face, fear, flu, girl, horizontal, hygiene, illness, infection, influenza, lifestyles, looking at camera, mask, medical, nature, outbreak, outside, overworked, park, portrait, prevention, protect, protection, protective, sick, smog, subway, summer, travel, virus, waist, walking, worried, young women,