Air quality continues to improve in major cities By HOU LIQIANG | CHINA DAILY | Updated: 2020-12-30 06:57 Share CLOSE A view of the Corner Tower at the Palace Museum in Beijing on Sept 3, 2020. [Photo/Xinhua] For jogging enthusiast Cheng Zhonghong, waking up early and having a lovely run in the clear and crisp morning air in Beijing is such a boon, as the visible improvement of the Chinese capital's air quality has given more incentives for more residents to join the running population. Three regions in China, especially the northern part where Beijing is located, that were most frequented by smog in the past have witnessed far fewer days of heavy pollution in the past three months, according to the Ministry of Ecology and Environment.