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"Haze management is a common responsibility of all countries worldwide," said Pan Kehou, secretary-general of the lab's academic committee. The lab "will take responsibility in leading and promoting internationalcooperation on energy saving and emissions reduction with scientific research institutions from other countries and regions, and in contributing to a better environment and development of ecological civilization".

"Green mountains mean potential economic returns," he said.

"From 2012 to 2016, China's contracted engineering projects overseas achieved a total turnover of 0 billion, marking an annual average growth of 9 percent. China has become a major engineering contractor in the world."

"Frankly speaking, I also considered leaving, but rather than endure the vagrant lifestyles that my ancestors experienced when they lived abroad, I preferred to settle down in our motherland and create a life of my own," he said.

"Given the scale of China's economy, the direction and policies being set are very significant beyond China－in the regional and global economy. With the challenges facing the world at the moment, it is encouraging to see China's economy still forecast to grow in 2020－one of the few large economies to do so," she said.