Wake up early enough and, depending on where you live, you’ll likely hear a pleasant chorus of birds chirping their tiny hearts out. This am avian arrangement is instinctual behavior for birds, but why? According to the Woodland Trust, this early singing is known as the dawn chorus, and it can start as early as 4 am and last for several hours. Birds do it to attract mates and warn other birds to avoid their turf. One theory as to why they opt for the wee hours to communicate these important m...

Wake up early enough and, depending on where you live, you’ll likely hear a pleasant chorus of birds chirping their tiny hearts out. This am avian arrangement is instinctual behavior for birds, but why? According to the Woodland Trust, this early singing is known as the dawn chorus, and it can start as early as 4 am and last for several hours. Birds do it to attract mates and warn other birds to avoid their turf. One theory as to why they opt for the wee hours to communicate these important m...

The habit of cutting sleeves is an idiom we learned when we were older. From the literal point of view, it is very obscure, and you really can't understand the true meaning without doing some research. Liu Xin, the faint king of the Western Han Dynasty, turned out to be a truly beloved person. When the two were sleeping on the same bed, when he had something important to leave, Dong Xian's body pressed against his broad sleeves, He couldn't bear to wake up his lover, so he cut off his sleeves...

The habit of cutting sleeves is an idiom we learned when we were older. From the literal point of view, it is very obscure, and you really can't understand the true meaning without doing some research. Liu Xin, the faint king of the Western Han Dynasty, turned out to be a truly beloved person. When the two were sleeping on the same bed, when he had something important to leave, Dong Xian's body pressed against his broad sleeves, He couldn't bear to wake up his lover, so he cut off his sleeves...