On the one hand the world is getting more integrated and we should not dismiss social values as "Western" when they are actually modern values. On the other hand, individual countries have their own history and their own evolution. Trade unions, for example, don't play the same role in China as they do in Europe or the US.

China has consistently surprised us. When I returned from the United States many years ago, it was unimaginable that we would end up where we are now. What China has achieved defies all logic. I credit this to the hard work and enterprising spirit of the Chinese people.

I have a profound dislike for showing off one's material wealth. This is insensitive and it is not what human hearts are made for. But what I like about China and sometimes miss in Europe is the entrepreneurial spirit of our young people, their ambition and dynamism.

Many years ago, we were only able to build boxes. Today, architects from all over the world are working with us - Zaha Hadid from London, Gerkan, Marg and Partner from Hamburg, Kengo Kuma from Japan. We brought design and digitalization from abroad to China.

I'm afraid what we are building today will not have the same impact and sustainability of the architecture of a 100, 500 or 1,000 years ago. The buildings of those days were miracles. We don't perform such miracles today. So we should be a little more modest. For my part, I'll be glad to show one of my buildings one day to my grandchildren and say: I'm proud of that.

Isolation means a lack of growth. I grew up in China at a time when the country was completely isolated. That era is over.

Chinese no longer crave so much for food and accommodation, but they do crave democracy. I stand by that. I don't know which model China will follow.