The Civil Defense Office reported that Chongqing will be free to open 86 civil air defense areas from the middle of this month to the middle of September, so that the public to enjoy the cool in summer. There are 17 districts and counties (units) participating in the project this year. The cooling area is more than 17,000 square meters, and can accommodate 12,000 people at the same time. (CQNEWS)