This book starts from the four major themes of food, clothing, housing and transportation, selects practical and important content, and tells the solutions to the problems in chapters. It not only popularizes science but also explains the principles to help readers understand and remember. Before the formal science popularization, there is a question and answer session to select some seemingly correct or seemingly wrong questions to break readers' misunderstandings. There are Easter eggs at the end of the article to remind readers of things to pay attention to and expand additional knowledge.