 I was asked to say something about the quality of life in Chinese cities, but I was trained in economics, so maybe I have more macro view on the issue rather than more micro view. I think since the reform in the late 1970s, China's mainland has experienced a fast urbanization. The level of urbanization increased from nearly 20% in 1982 to almost 50% last year, so in the past 30 years maybe level of urbanization increased by 1% percentage point per annum. But the issue is whether the cities make the people's life better. I think the theme of the 2010 Shanghai Expo is better city, better life. The exhibits and the forums of the Expo made some further inquire into the question of what kind of cities make life better. There were many discussions. I'm afraid I don't have time to go to the details, but in fact prior to the 2010 Expo, there have been some efforts to measure quality of life in Chinese cities. The government ministries, they have initiated projects to measure quality of life in Chinese cities from different perspectives. Such projects include national livable cities, national healthy cities, national civilized cities, national model cities for environment protection, national model cities of smooth traffic, et cetera. There are many such government initiative projects, but in addition to those projects, universities and research institutes have also been involved in the study of measuring quality of life in cities. The news media reported several fundings of different projects. I'll go to the detail, but the problem is different projects gave us different ranking of cities of quality of life. This illustrates that the ranking to a large extent depends on how to measure quality of life with different sets of indicators and weights. Therefore, the measure of quality of life in cities, like the measure of the so-called carrying capacity of land or something, remain in the precise stage. I want to say something about the quality of life and urban density, the quality of life and the urban size and the quality of life of inclusive lives of urban development. The biggest issue in China is how to watch the urban development strategy, whether we should give higher priority to the development of larger cities, the medium-sized cities or the small cities. In the 1980s, the government gave higher priority to the development of small cities and the towns. The small cities and the towns cannot create many job opportunities in the service sector, and there's no economic scale in productive investment and infrastructure investment. So now the government's strategy is to more balanced development of different sides of cities in China. In many surveys of happiness, the biggest cities in China, like Beijing and Shanghai, were not the happiest cities in China. But the young people, they still prefer to go to Beijing and Shanghai and Guangzhou. I think because there are different dimensions of happiness, in big cities you have better opportunities, more opportunities, but on the other hand you have more stress, more expensive living, so people have to make trade-off between different dimensions. And I want to say something about the quality of life and the inclusive development of cities. There are another two minutes, thank you. Two minutes? Okay. In China, I think one special feature is the household registration system. So the city growth in China is dominated by the so-called pattern workers in cities. So in the 2010 census, it reported that there were 220 million migrants in cities. They don't have household registration there. So they have no access. They have less access to public services such as schooling of their children, public health care, and they have less access to social insurance programs and labor protection. So many scholars call the urbanization in China the quasi-organization or the shallow-organization. So I think this is the problem of future development of China. So maybe in future we should make the city development more inclusive, more vital, innovative, and more sustainable. I think I should stop here. Thank you.