The Suning.com Super Flagship Store at Beijing Huiju Shopping Center is carrying out a trade in activity. "The old air conditioning is not cooling very well. With the promotion of exchanging old for new and the addition of discounts from shopping malls, the original price of air conditioning, which was over 7500 yuan, was only 5000 yuan. Recently, Mr. Wu from Daxing District, Beijing, replaced all his old air conditioning with new ones, which not only allows him to enjoy preferential subsidies, but also saves energy and electricity.". Recently, the trade in campaign has been in full swing across the country. The reporter observed that from home appliances to cars, consumers prefer energy-saving and low-carbon products when replacing them, and the "green content" of consumption continues to increase. The detailed rules issued in many places regarding the policy of exchanging old appliances for new ones are all related to "green". Sichuan provides a one-time subsidy of 10% of the actual selling price for seven categories of green smart home appliances purchased by individual consumers in the province, with a maximum of 1000 yuan per unit; Ningxia proposes to provide subsidies for purchasing 17 categories of household appliances with second level or higher energy efficiency and a unit price of 1000 yuan or more to participate in activities such as exchanging old for new; Henan provides subsidies to consumers for selling waste household appliances and purchasing green smart household appliances and smart electronic products, and the provincial finance provides subsidies for actual fiscal expenditures in various regions at a rate not exceeding 30%. By combining online and offline methods, e-commerce platforms also provide consumers with more convenient and efficient trade in services. According to data from Suning.com, since the launch of the "old for new" campaign on March 29th, as of April 14th, orders for "old for new" have increased by over 129% year-on-year, driving an 11% increase in sales of green and energy-saving home appliances. In the view of Li Zhengbo, Chief Analyst of China International E-commerce Center, promoting the exchange of old appliances for new ones and developing green circulation is an effective way to stimulate potential consumption and promote resource recycling. In order to promote this concept, China has issued a series of policies to make the concept of green consumption more deeply rooted in people's hearts, and a green and low-carbon lifestyle is gradually becoming a trend. In addition to household appliances, the automotive industry is also moving towards a "green" trend of exchanging old for new. The reporter learned that many families choose to replace new energy vehicles and pursue a more energy-efficient and environmentally friendly driving experience. According to the official website of the Ministry of Industry and Information Technology, the sales of new energy vehicles in China increased by 33.5% year-on-year in April, and the cumulative sales from January to April accounted for 32.4% of the total sales of new vehicles. According to the latest implementation rules for the subsidy of replacing old cars with new ones, consumers who purchase new energy passenger cars will receive a subsidy of 10000 yuan. Recently, the Ministry of Industry and Information Technology and five other departments have also launched the 2024 New Energy Vehicle Campaign to the Countryside, with a total of 99 vehicle models participating in the event. "With policy support, the sales of new energy vehicles are expected to further increase in the future." Li Zhengbo believes that this will not only drive the improvement of infrastructure such as charging, parking, and smart transportation, but also continue to expand the application of technologies such as autonomous driving and intelligent control in the field of new energy vehicles, creating a safe, comfortable, efficient and energy-saving driving experience for consumers. "The exchange of old for new has shortened the cycle of consumers' exposure to green intelligent innovative products, providing strong support for better cultivating new consumption growth points, enhancing development potential and momentum," said Li Zhengbo. Faced with the new opportunities and challenges of green and low-carbon development brought about by exchanging old for new, multiple experts suggest that society