? Grasping the critical period of large-scale application, fully releasing the enabling effect of 5g on the development of digital economy, and promoting both construction and use is the key to ensure the stable and long-term development of 5g in China By the end of April, more than 1.6 million 5g base stations had been built, making it the first country in the world to build 5g networks on a scale based on independent networking mode; The total number of 5g mobile phone users reached a new high, more than 413million; The number of 5g standard necessary patents declared by Chinese enterprises remains the world leader; New breakthroughs have been made in the integration and development of the national cable TV network and the 5g construction of radio and television. China's Radio and television network has initially formed a new pattern of "cable +5g" integrated development... On the third anniversary of the issuance of 5g license, the "China speed" of 5g construction has once again attracted the attention of the world. 5g development has reached a new level, which not only promotes the leapfrog growth of the information and communication industry, but also injects a strong impetus into the digital transformation of economic society. Looking back on the past, from 2G to 3G and then to 4G synchronization, China has made a historic breakthrough in the goal of 5g. This leadership is not only reflected in the speed and scale of 5g network construction and the total number of 5g users, but also deeply integrated into different scenarios of thousands of industries. For example, 5g network goes deep into the mine, and the real-time signal shuttles between the vertical and horizontal rocks with low time delay, making the ground and underground orderly linkage; The 5g continuous coverage of the whole route from the base camp of Mount Everest to the summit of Mount Everest enables uninterrupted communication on the plateau; 5g supports long-distance communication between sea and land, opening a new channel for large flow, high-speed and stable transmission between offshore oilfield platforms. For industry, medical treatment, education, transportation, mining and other industries, 5g application cases have accumulated more than 20000, covering 40 national economic categories. In the past three years, 5g has expanded its business scenarios at a faster than expected speed and stepped into a critical period of large-scale applications. To analyze the development potential of emerging things, it is particularly necessary to have a "long-term view of scenery" pattern and vision. Over the past three years, China has adhered to the principle of moderate advance to promote construction and use, actively and steadily promoted the construction of 5g network, and released surging economic vitality. Over 40 billion yuan in 2019, 170 billion yuan in 2020, and 184.9 billion yuan in 2021... In the past three years, 5g investment has risen rapidly and reached new highs. Moreover, the vigorous development of 5g has accelerated the pace of industrial digital transformation. It is estimated that 5g will directly drive the total economic output of 1.3 trillion yuan in 2021. At a time when China's economic development is facing the triple pressure of demand contraction, supply shock and weakening expectations, 5g construction provides an important support for stabilizing investment and growth, and has become a powerful engine driving China's high-quality economic development. The integration of 5g and industrial Internet will accelerate the construction of Digital China and smart society, accelerate the process of China's new industrialization, inject new momentum into China's economic development, and create new development opportunities for the world economy. To promote the use of construction, use is the key. At present, a new round of scientific and technological revolution and industrial reform are advancing, and information technology is changing with each passing day. It should be noted that at present, 5g applications in China are still in development, and still face many challenges, such as insufficient application scenarios, the industrial foundation needs to be stabilized, and the financing effect needs to be strengthened. Grasping the critical period of large-scale application, fully releasing the enabling effect of 5g on the development of digital economy, and promoting both construction and use is the key to ensure the stable and long-term development of 5g in China. On the one hand, only through continuous upward integration can we prosper the application ecology. At present, 5g applications in some leading industries have entered the growth stage, so we should implement policies and promote stubble pressing in different industries, and continue to expand the breadth and depth of 5g applications. Based on the existing mature industry applications, we should establish a number of high-level pilot application benchmarks, and accelerate the replication and promotion of mature applications to thousands of industries by precipitating general capabilities and making up for technical shortcomings. On the other hand, only by taking root downward and working together can we strengthen the industrial foundation. The digital level and development stage of different industries and enterprises are different, and the demand varies greatly. We should continue to strengthen the adaptation and support of 5g technology to the industry demand to meet the diversified and personalized needs. Only when the root is deep can the leaves flourish, and when the source is far away can the flow grow. To strengthen the industrial foundation of 5g, we still need to focus on key problems such as communication chips and devices, form a joint force in the upstream and downstream of the industrial chain, eliminate industrial barriers, carry out technical research, and speed up the digital transformation of the industry. Today, China has a huge market and rich application scenarios, which not only constitutes the advantages of 5g development in China, but also puts forward higher requirements for 5g network capacity and technological innovation. Grasp and make good use of the critical period of 5g large-scale application, strive to consolidate the foundation and expand the application boundary, and we will be able to better enable the real economy and write a new chapter on the road to power. (outlook new era)