On Saturday night, it was cloudy with Mao Mao rain from time to time. Several domestic swallows are playing carefree on the road. Suddenly, a big truck roared by, and my heart tightened and I couldn't help but close my eyes. I know something unfortunate has happened. A big swallow fell in a pool of blood. It looks like a mother, and the swallow next to it is its child. Little Yan Jia was very surprised to see his mother like this. It took a step forward first, looked at the big truck driving, and tears dripped on its mother's wings. He was shocked, but he didn't give up a glimmer of hope.