I firmly believe that digitalization has only just begun in China. In addition to the taxi, transport, shopping and hotel businesses, many other industries will follow: education, health care, administration, even the legal branch - everything, really. There is still a lot of opportunity in China for the inventive and ambitious ones.

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.

When we started out, we were among the first. Beijing had no and Shanghai had very few large buildings. At that time, it was all about building, building, building - and then selling, selling, selling. We were working like a manufacturer. Soon, however, we realized that land was running out in Beijing and Shanghai. So we started keeping our buildings, and managing and renting them out. We became landowners. That was the second act.

The question is not about whether it will work or not. It's how quickly we can pull it off. Structural change will happen. When economies grow, there comes a time when you cannot rely on investment alone. We had that. The return on investment is becoming less and less. So we have to change. The old model doesn't work anymore. It's a question of speed.

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.

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

But it is a worry that there have been so many delays in the reform of China's state-owned enterprises. We all know that private companies are run more efficiently than state ones. These reforms are very much anticipated for the potential dynamism they could create.