On the sixth anniversary of 5G commercial use, global mobile communication technology has begun to accelerate into the "5.5G" era. In recent times, many careful citizens have discovered that the mobile communication signal logo "5G" in the upper right corner of the mobile phone sometimes suddenly changes to "5G-A". Behind this small change, there are huge technological changes and business opportunities. Reporters interviewed many parties and found that at present, the construction of 5G-A networks has entered the fast lane. China, the Middle East, Asia-Pacific and other places are accelerating the commercialization of 5G-A and actively exploring new business paradigms. Under the wave of artificial intelligence (AI), the deep integration of 5G-A and AI has also brought unprecedented changes and opportunities to all walks of life. However, many experts interviewed said that the current 5G-A communication technology still faces challenges in terms of technology, business model and market acceptance.