With the US Treasury Secretary Janet Yellen's visit to China, overcapacity has become a hot spot of social concern. How should we look at this? Is it a false statement? Why did the US and Europe react so strongly? What will happen next? What impact will it have on our economy? And what should we do about it? On April 26, SDRF held the 78th series of symposia to discuss the problem of overcapacity and countermeasures.