![](http://www.ecns.cn/hd/2019/09/04/4d6a89069c8f4f2fbb6fd55e2c95543b.jpg)
Photo taken on Sept. 3, 2019 shows the 200-metre stretch of blue road paved with the so-called 'cool pavement'. The 'cool pavement' is set with a protective material to reduce the damage from contact with vehicles and to extend its life. The 'cool pavement', reflecting about 50 percent of sunlight, consists of four layers of a primary material, followed by three layers of materials that reduce heat absorbed by solar radiation. (Photo/Agencies)
![](http://www.ecns.cn/hd/2019/09/04/ffeea64dcf0140779f3cfa80e8e3d42d.jpg)
Photo taken on Sept. 3, 2019 shows the 200-metre stretch of blue road paved with the so-called 'cool pavement'. The 'cool pavement' is set with a protective material to reduce the damage from contact with vehicles and to extend its life. The 'cool pavement', reflecting about 50 percent of sunlight, consists of four layers of a primary material, followed by three layers of materials that reduce heat absorbed by solar radiation. (Photo/Agencies)
![](http://www.ecns.cn/hd/2019/09/04/72b3af5e0b0b42aca1516c966759edc3.jpg)
Photo taken on Sept. 3, 2019 shows the 200-metre stretch of blue road paved with the so-called 'cool pavement'. The 'cool pavement' is set with a protective material to reduce the damage from contact with vehicles and to extend its life. The 'cool pavement', reflecting about 50 percent of sunlight, consists of four layers of a primary material, followed by three layers of materials that reduce heat absorbed by solar radiation. (Photo/Agencies)