Recently, northern China has entered the heating season, and the demand for energy has increased. In a warm room, while enjoying the achievements of energy conservation and supply, the whole society should pay more attention to energy conservation. China has always attached great importance to energy conservation. The opinions of the CPC Central Committee and the State Council on completely, accurately and comprehensively implementing the new development concept and doing a good job in carbon peak and carbon neutralization clearly requires that conservation should be given priority, energy and resources conservation should be put in the first place, and a comprehensive conservation strategy should be implemented. Many places advocate a simple, moderate, green and low-carbon lifestyle, and continue to reduce energy and resource consumption and carbon emissions per unit output. For example, Beijing issued the implementation plan for further strengthening energy conservation in Beijing, requiring party and government organs and state-owned enterprises and institutions to take the lead in energy conservation, and the administrative office area of the deputy center to set an example and stop exterior lighting in principle. Energy saving is conducive to the realization of the "double carbon" goal. Carbon peaking and carbon neutralization are the inevitable choice to solve the prominent problems of resource and environmental constraints, and a solemn commitment to building a community with a shared future for mankind. Although China's energy structure has been gradually optimized and its dependence on coal has been reduced, coal still occupies an important position in the energy structure. More energy consumption means more greenhouse gas emissions. To achieve the goal of "double carbon", we must do more in energy conservation. Energy saving is the proper meaning of improving energy efficiency. At present, the green and low-carbon production and life style has gradually become a consensus, but the problems of energy waste and low efficiency more or less exist in production and life. Some places still have the impulse to launch high energy consumption and high emission projects; Some cities set up landscape lighting and light shows that exceed the consumption and practical needs; Some commercial buildings, hotels, shopping centers and cinemas are set too low in summer and too high in winter; Some central heating office areas open air conditioners here and doors and windows there, which is called "ventilation"; Some hallways, corridors, toilets and elevator rooms have bright lights... Indicating that China still has great potential in energy conservation. Accelerating the formation of green production and life style is the key to saving energy. We should vigorously promote energy conservation and emission reduction, comprehensively promote cleaner production, develop circular economy, strengthen comprehensive utilization of resources, and constantly improve the level of green and low-carbon development. At the same time, we should continue to guide people to form energy-saving habits, advocate a green and low-carbon lifestyle, publicize energy-saving knowledge, gather the consensus of the whole society, and form a good pattern of national participation. (outlook new era)