Every summer, cicadas shout "it's hot, it's hot" in the tree to report the news of summer.
Every autumn, the plane leaves first break away from the trunk to report the news of autumn.
Every winter, the cold wind blows to the whole earth, reporting the news of winter.
Every winter, the mercury stigma on the thermometer swims around zero to report the news of winter.
Every winter, frogs, snakes and turtles quietly hide to sleep and report the news of winter.