Legal analysis: public **** recreational activities noise pollution has no time restrictive regulations. Building construction noise restriction time for the night that is between twenty-two o'clock in the evening to six o'clock in the morning.
Legal basis: "The Chinese People's *** and State Environmental Noise Pollution Prevention and Control Law"
Article 45 prohibits the use of high-pitched broadcasting loudspeakers by any unit or individual in the concentrated area of noise-sensitive buildings in urban areas.
Organizing entertainment, gatherings and other activities in the streets, squares, parks and other public **** places in urban areas, where the use of sound equipment may produce excessive volume that interferes with the surrounding living environment, must comply with the provisions of the local public security organs.
Article 56 If a building construction unit violates the provisions of the first paragraph of Article 30 of this Law and carries out prohibited building construction operations that generate environmental noise pollution at night in a concentrated area of noise-sensitive buildings in an urban area, the competent department of ecology and environment of the local people's government at or above the county level in the place where the project is carried out shall order rectification, and a fine may be imposed as well.
Article 63 The meanings of the following terms in this Law are:
(1) "Noise emission" means the radiation of noise from a noise source to the surrounding living environment.
(2) "Noise-sensitive buildings" refers to hospitals, schools, institutions, scientific research units, residences and other buildings that need to be kept quiet.
(3) "Noise-sensitive buildings concentrated areas" refers to medical areas, cultural, educational and scientific research areas, and institutions or residential areas.
(d) "Night time" means the period between twenty-two o'clock in the evening and six o'clock in the morning.
(e) "Motorized vehicles" means automobiles and motorcycles.