转发！准备过年！长安街挂上大红灯笼中国结

Group 1 - The core theme of the article highlights the emphasis on frugality and environmental sustainability in the Spring Festival decorations along Chang'an Avenue in Beijing [1] - The decorations include red lanterns, Chinese knots, and string lights, which create a stunning night view [1] - The materials used for the lanterns and knots are PETG, and all light sources are energy-efficient LED lights, showcasing a commitment to energy conservation and longevity [1] Group 2 - The decoration setup adheres to the principle of "reuse," reflecting a commitment to environmental protection and cost-effectiveness [1] - The reuse rate of the red lanterns and other decorations is reported to be 90%, indicating a significant effort in sustainability [1]