With the evolution of urban functions, space has become a scarce resource, especially in densely populated old urban areas. It is necessary to effectively utilize every inch of land from concept to practice, from planning to construction. Cities have always been embracing change and actively transforming to become more livable and business friendly. In sports venues, there are always sports enthusiasts practicing their hitting movements; On the sports facilities of the unit, there are always people who use their leisure time to exercise and participate in competitions; On community public spaces, there are often exercisers practicing square dancing, clapping exercises, roller skating, balance bikes, and other activities in the morning and evening; On the vacant land of the community, there are even parents who have brought simple basketball hoops and table tennis tables for their children to shoot and swing. The ubiquitous sports and fitness scenes witness the continuous heating up of sports and fitness from teenagers to middle-aged and elderly people, reflecting the continuous construction of a sports power and a healthy China, which strengthens the foundation of the masses and accumulates endogenous momentum. Developing mass sports, promoting national fitness, and increasing facility supply are prerequisites. Faced with the strong demand for fitness, the supply side tasks are more prominent. To increase the supply of sports venues, it is advisable to start with more compatible urban spaces such as small open spaces in streets and alleys. With the evolution of urban functions, space has become a scarce resource, especially in densely populated old urban areas where every inch of land needs to be effectively utilized. After simple hardening, open spaces and leisure areas are not only a good place for residents to exercise, relax and entertain, but also a gathering place for various commercial activities, such as summer night markets and weekend promotion venues, which can add support to the development of urban connotation and improve the quality of life of citizens. By slightly renovating open spaces and leisure areas, small squares and fitness trails can be paved with stone slabs or plastic, which can alleviate problems such as brisk walking competing with motor vehicles for roads, square dancing competing with basketball for courts, and so on. This actually conforms to the governance approach of turning blockages into looseness, resolving conflicts in their infancy, and resolving disputes at the source. Responding to the expectations of the masses and serving their needs. In recent years, from the Beijing Winter Olympics to the Paris Olympics, China has made breakthroughs in the field of competitive sports, continuously driving the formation of a new trend in society that loves sports, advocates fitness, and cares about health. The flat and hard surfaces at street corners and alleys not only create conditions for national fitness, but also help sports enthusiasts polish their basic movements and complete introductory exercises. People use the field at their doorstep to engage in sports, participate in sports, gain health through sports, enjoy happiness through health, experience life through happiness, and their technical level can also be improved. Daily fitness and practice are beneficial supplements to campus sports and professional training, promoting the comprehensive development of mass sports and competitive sports, and preparing seeds and seedlings for competitive sports. Empty land is not "empty" because it carries countless needs; Hard ground is not "hard" because it reflects humanistic care. General Secretary Xi Jinping emphasized that "urban management should be as refined as embroidery" and "improving people's well-being should be the starting point and foothold of urban construction and governance". From the perspective of input-output, hardening the open spaces at street corners and alleys, with slight greening, is easy to construct and maintain, which can greatly meet people's fitness and training needs. In the morning, it is used for elderly people to exercise, in the afternoon, it is used for office workers to take a walk, and for families to take their children for sunbathing. In the afternoon and evening, it can also be used for various outdoor activities by primary and secondary school students. Such public facilities are easy to use, cost-effective, durable, and can easily achieve maximum public benefits. The over 600 pocket parks built by Beijing's "seizing every opportunity" are similar beneficial explorations. From concept to practice, from planning to construction, cities have always been embracing change and actively transforming to become more livable and business friendly. The Decision of the Third Plenary Session of the 20th Central Committee of the Communist Party of China proposed to "adhere to the principle of people's cities being built by the people and people's cities serving the people", and made a series of arrangements around improving the urban planning system. From the renovation of community public spaces to the addition of fitness facilities in front and behind houses, the organic combination of residents' sports and fitness needs with the surrounding urban spaces, increasing the supply of sports facilities and venues, is a vivid embodiment of the concept of "people's cities built by the people and people's cities for the people". Therefore, whether it is the renovation of old residential areas or the promotion of urban renewal, it is advisable to leave a moderate amount of "blank space", allowing for the preservation and utilization of more compatible and easily accessible open spaces, flat land, and hard land. Not long ago, the Beijing Olympic Center Management Committee dismantled over 5000 meters of fence in the central area of the park and lifted the closure management. Coincidentally, Century Park in Pudong New Area, Shanghai has also dismantled its walls in stages and is open 24 hours a day. The innovative attempts in urban governance and urban planning and construction are worthy of praise and encouragement. Strengthening the public welfare attributes of public facilities, expanding the types of functions of public spaces, allowing people who love green plants to see greenery when they go out, and allowing people who love sports to exercise anytime and anywhere, such a beautiful urban life is worth looking forward to! (New Society)