Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

○这首歌简单而热闹，充满浓浓过年气氛，阿牛用摇曳的桃花树、成双的鸟儿、在树下等故人的痴情人，营造出浓浓的春意和爱意，歌词琅琅上口，在爱情之外包含了“回家、团圆”的意思。