Chinese President Xi Jinping speaks at a China-US CEO roundtable discussion in Seattle, the United States, Sept 23, 2015. [Photo/Xinhua]

The surprising thing now is not that the Chinese economy is slowing, but that there are so many who seem surprised by this.

Chinese leaders, and economists, have been saying for years that the high rate of GDP growth was unsustainable. In many ways it is remarkable that China has managed it as long as it has.

From 1978 to the 2000s, the Chinese economy grew fast, but from a much smaller base. Delivering 10-plus percent GDP increases was easier then than now, for the simple fact that these days the Chinese economy is five times larger than it was even as recently as 2000. Making even 1 percent of growth means much more activity and work now than it did a decade and a half ago.

On top of this is the simple issue of inevitable changing economic structure as a country develops. In the early and middle phase of reform and opening-up, China remained a place where over half its people lived in rural areas, and it had a high dependence on manufacturing for exports and fixed asset investment. All of this added up to a colossal commitment to the future, with high amounts of economic activity aimed at improving infrastructure and human capital, things which China now has in place. China is moving beyond that investment phase now. It is, to put it simply, maturing.

Bearing all of this in mind, it is time to think of China as more than a place that can be summarized on the basis of one single GDP statistic. We now need to look at the increase in services as a proportion of GDP, up 8 percent in terms of growth over the last year, and consumption, which has risen in the last two years from 36 percent of GDP to 38 percent. We need to look at the diversification of China's energy consumption, which is shifting away from coal towards other forms of supply - and the ways in which wages are rising for the all important emerging middle class, making them different economic actors.

There is a very simple label for this - modernization. The Chinese economy is entering a complex period, one in which it is seeking to undertake an immense transition toward fuller modernity. Again, like the deceleration of raw GDP growth, this has been repeatedly referred to by Chinese politicians and officials over the last five years. The mission in their words is clearly to deliver a higher consuming, more innovative, more diverse, more domestically focused growth model - one where China is less the factory of the outside world and more an intellectual center in its own right, using the assets, for instance, of its 2,500 universities to create deeper linkages and more balanced, research-led partnerships with the world, creating a modern healthcare system, modern cities, and an indigenous finance sector.

There remain plenty of sources of growth in China. But the story of growth in China now has to be about quality. Quality in terms of environmental sustainability, in terms of meeting the aspirations for a better standard of living amongst Chinese people, and in terms of creating a properly modern, innovative, entrepreneurial model.

This is not something to be optimistic or pessimistic about. There isn't any alternative. It is right to be vigilant and show concern, but the outside world, when it comes to Chinese growth, needs to stop panicking about the easy figures and start thinking about the real issues - how China's transition towards developed economic status was always going to be tough, and how, as long as the will, inside and outside China, is there, anything is possible.

The author, a former British diplomat stationed in Beijing, is director of the Lau China Institute and professor of Chinese Studies, King's College, London, and an associate of Chatham House.