중국의 공기 질이 40% 이상 개선됐으나 한국의 공기 질은 그대로이거나 심지어 조금 나빠졌다는 등의 주장을 했었다.
It absolutely was argued that the air quality in China has improved by significantly more than 40%, however the air quality in Korea is the same and sometimes even somewhat even worse.