This slogan conveys the happiness and pleasure brought by autumn outing through concise and clear expression. The happy part of the autumn outing directly points out the theme and highlights the happy experience brought by the activity itself. Flying in the sky is a metaphor, which vividly describes the changes of the participants' inner state during the autumn outing. It means that participants will feel relaxed and happy by enjoying the beautiful scenery, relaxing themselves and interacting with friends, thus showing that their inner world is as carefree and free as a bird. The whole advertising language conveys a sunny, cheerful and upward message, which can give people a sense of excitement and expectation both visually and emotionally. Encourage people to participate in outdoor activities in autumn, enjoy the infinite beautiful gifts that nature has given to each of us, and integrate this joy into their hearts.