The first four lines of the poem describe to us a bright spring scene. The green sunflowers in the garden are still covered with dew. After the sun rises, the dew dries up, and the sunflowers are bathed in sunshine again. Everything in the world is blessed by the rain and dew of nature in spring, and glows with incomparable brilliance. However, when autumn comes, they all lose their bright luster and become yellow and withered. All things undergo ups and downs, and people also undergo a process from youth to old age. Time is like water in a big river, flowing eastward into the sea and never to return. If we don’t cherish time and work hard when we are young and strong, we will only be sad in vain when we grow old!