a video about senior high-school students in southwest china's yunnan province enjoying the sunset during class has gone viral online in china.
senior high-school students in china have usually immersed themselves in stressful school life as they need to prepare for the highly competitive and fate-deciding national college entrance exam.
zeng changchun, a teacher with the school, decided to let students take a break when he saw the beautiful dusk during an evening class.
students said this moment has become a particularly unforgettable memory.
