We spend most of our time at home, in the company and on campus. We seldom have the opportunity to touch the outside world or the fresh environment without pollution. And travel just provides us with a chance to touch nature. In the process of travel, we inevitably need to walk and talk more. In this process, we are more close to the touch of nature, and we can feel more confident and bold to breathe fresh air, listen to the chirp of insects and birds, and watch the clouds roll and the clouds are comfortable. This kind of feeling is really not common.<br>
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