It should be that Yingfeicao is as long as February, and there is no poem that Yingfeicao is as long as April. In February, the grass grows and the warblers fly, and the willows are drunk with spring smoke. The children came back from school early, so they were busy flying kites in the east wind. This little poem describing the scenery in spring is an impromptu work of the poet when he lived in the countryside. "The grass grows in February and the warbler flies" is about time and natural scenery. It vividly depicts the nature in spring and writes the beautiful and charming scenery unique to the countryside in spring. In early spring and February, the grass grows green buds, and orioles fly in the sky and sing happily. The long branches of willows beside the embankment brushed the ground gently, as if drunk and trembling in the spring smoke. The word "grass grows and warblers fly" vividly describes the scenery of spring, making readers feel the atmosphere of recovery and prosperity, and the pulse of spring seems to surge in front of them.