Ключевые слова: 3539 years, attitude, beijing, black hair, building exterior, business, business clothing, businessman, busy, button down shirt, china, chinese ethnicity, color image, communication, concentration, connection, corporate business, focus, holding, horizontal, individuality, indoors, looking away, mid adult men, mobile phone, mystery, night, occupation, office, one person, photography, selective focus, short hair, side view, skyscraper, smart clothing, smart phone, standing, using phone, waist up, white color worker, wireless technology, working,