This poem expressed the poet's joy and gratitude. It described the scene of the sky becoming bright and beautiful after the sun rose, implying the joy and gratification in the poet's heart. The following three or four sentences explained the situation: - Happy sunny day: The poet used "happy sunny day" to describe the bright and beautiful state of the sky after the sun rose, expressing his joy and celebration of this beautiful moment. - Everything Glows: The poem is about the sky becoming bright after the sun rises, and everything becomes full of vitality and brilliance under the sunlight, implying the vitality and joy of the poet's heart. - Gratitude: The poet expressed his gratitude for this beautiful moment, thanked the power and beauty of nature, and expressed his love and cherish for life.