Not really, 70% of Hong Kong is hilly area. 7M of people is living in 30% of the land of Hong Kong. 99% of people are living in high raised buildings and it is the way to EXPAND the area of Hong Kong. Hong Kong has poor air quality due to the incoming of pollutants from mainland China. But...

by the way, Luxembourg is a transportation hub in Europe and you may find an extraordinary high CF number in MOBILITY. Leo

Read the original document! The reporter misled the readers. The writer and the reporter has no idea about the data showing in the research and the situation of each countries. You may find that there is an extraordinary high CF percentage in clothing and manufacturing section of Hong Kong...