Legal basis: Article 45 of the Law of People's Republic of China (PRC) on the Prevention and Control of Environmental Noise Pollution prohibits any unit or individual from using tweeters in areas where noise-sensitive buildings are concentrated in urban areas. Organizing entertainment, assembly and other activities in urban streets, squares, parks and other public places, as well as using audio equipment that may produce excessive volume that may interfere with the surrounding living environment, must abide by the provisions of the local public security organs.