Shanghai is destined to play a key role in spearheading financial reform. But as the most cosmopolitan city on the mainland, it can do much more than that.

People in many other cities expect it to set an example in addressing one of the most pressing issues they are facing, air pollution.

Shanghai has made the successful transformation from a sprawling industrial heartland into a services center. In the process, the municipal government has created an environment where people can enjoy greenery, open spaces, clean streets and fresh air. That was, at least, the impression I got when I was living and working in Shanghai.

Since I left late last year, I've read numerous reports of worsening smog that has held the city in its grip for weeks. I wonder, if I return to Shanghai, whether I will still indulge in sojourns in the green fields across the street from the office or leisurely strolls along the tree-lined streets in the former French concession district.

Many Shanghai people, as expected, have been blaming the worsening air quality in their city on the pollution caused by the industrial activities in nearby cities and counties. They are mostly correct. But that does not mean that there is nothing they can do to make things better.

Nobody doubts the Shanghai government resolve to build a first-class city in preparation for what many people believe is its destined role as one of the world's major international financial and business centers. In fact, the hardware, in the form of an excellent highway network, adequate public transport and the many tall and gleaming office structures, are all in place.