This project belongs to the field of building energy and environmental technology, relying on a completed National Natural Science Foundation project. The research results are applied and transformed into multiple large-scale construction projects, achieving technological progress achievements as well as economic and social benefits. The increasing building energy consumption in our country has brought a series of energy and environmental problems, becoming the main contradiction in the field of construction. Currently, there are still many misconceptions regarding ultra-low energy building design and development. On one hand, the architectural environmental performance still exhibits singularity and "high technology dependence"; on the other hand, there is a lack of systematic, universally applicable, and life-cycle approach to the application of ultra-low energy building design technology. This project proposes a systematic high-performance low-energy building design method and technology, which includes energy system diagrams, climate parameter assessment, performance simulation evaluation, energy consumption model analysis, experimental parameter measurement, A comprehensive approach combining multi-objective algorithm optimization with post-evaluation feedback, exploring the application of high-performance low-energy building prototypes and thermodynamic theory. This approach organizes important mechanisms from interdisciplinary foundational theories that can be applied to the design of high-performance low-energy buildings. It proposes a method for determining and optimizing energy supply and demand strategies based on climate zoning at the early stages of design, and conducts research on paths, strategies, and models for integrating architecture and energy using typical climate regions in China as case studies. It innovatively establishes environmental performance evaluation indicators and feedback mechanisms applicable to different stages of the full lifecycle of construction projects in China, laying the foundation for energy integration starting from the early stages of architectural design and system development based on building environmental performance. The study also constructs a material culture-oriented thermal performance analysis framework for ultra-low energy building construction systems, investigating the impact of climate factors in different regions and internal factors of various functional buildings on the construction technology at all levels of buildings. Finally, by breaking through bottlenecks such as theoretical integration, practical implementation, and regional adaptation, a pioneering high-performance low-energy building thermodynamics design method and technology system were proposed. 1. The country was the first to introduce thermodynamic theory based on energy system language into the technical platform, proposing a data-driven technology-oriented low-energy building energy consumption model construction method, innovating building performance and energy consumption evaluation standards, and innovatively establishing an evaluation and feedback mechanism for the entire lifecycle. 2. A climate-zoned energy supply and demand strategy was proposed, which combined typical climate zone project practices in China to optimize the path, strategy, and model of building and energy integration. The thermal performance of materials was studied in depth, and a material culture-oriented low-energy building construction system was established. 3. The data representation method based on climate parameter analysis was optimized and improved, leading the country in proposing a performance algorithm and post-evaluation feedback mechanism based on multi-objective optimization. A low-energy building thermodynamic design method and technology application system oriented by environmental regulation have been established, achieving systematic system design. The key technologies of the project are independently owned intellectual property rights, with a total of 5 patents authorized, 2 computer software copyrights, and 5 monographs published, as well as more than 10 papers indexed in SCI/EI. The key technologies have been systematically promoted and applied in large and medium-sized projects, conducting environmental evaluation and simulation optimization throughout the entire lifecycle. They have been applied in more than ten large public buildings designed by the applicant, including the Hangzhou Civic Center (recognized by 20 renowned industry experts in post-evaluation), the Tourist Service Center of Yellow River Estuary Ecological Tourism Area, the No. 1, 2, and 3 Buildings of Chongming Sports Training Center in Shanghai, the new Henan Provincial Science and Technology Museum, and the University Life Activity Center of Tongji University in Jiading Campus. After application, the area using HVAC equipment has been reduced by 15-22%. The percentage of thermal comfort hours during the transitional season has increased by 22-30%, saving energy consumption in HVAC equipment operations by 30% each year, with direct economic benefits of nearly 35 million yuan over the past three years. It has also been promoted and applied in other projects, achieving significant economic and social benefits.