Ключевые слова: adult, asian, asian ethnicity, casual clothing, cheerful, city, communication, enjoyment, females, friend, friendship, fun, group of people, happiness, happy, indoors, laughing, lifestyles, males, men, mobile phone, people, photographing, posing, positive emotion, selfie, smart phone, smartphone, smiling, student, talking, technology, teenager, togetherness, urban scene, vietnamese, wall building dinner, wireless technology, women, young adult, young men, young women, youth culture,