What is the annual reception volume of tourists in national 4a scenic spots?

4A-level scenic spots are in accordance with the national standard of Classification and Evaluation of Quality Grades of Tourist Attractions and the Administrative Measures for Quality Grades of Tourist Attractions. The annual reception volume:

There are more than 5, tourists at home and abroad, including more than 3, overseas tourists.

a) the air quality reaches the first-class standard of GB 395-1996.

b) the noise quality reaches the first class standard of GB 396-1993.

c) the environmental quality of surface water meets the requirements of GB

3838.

d) The sewage discharge reaches the requirements of GB 8978.

e) The natural landscape and cultural relics are protected by scientific means and advanced measures, which can effectively prevent natural and man-made destruction and maintain the authenticity and integrity of the natural landscape and cultural relics.