Traditional wisdom--that is, most media reports--seem to accept as fact the notion that China's growth is wholly dependent on exports.  But McKinsey researchers John Horn, Vivien Singer, and Jonathan Woetzel say that their most recent work shows that China's economy is moving toward more reliance on domestically driven economic growth.  And this, they argue in the McKinsey Quarterly, has global business implications: 

Arguments over the true nature of China’s economic reliance on exports have been rooted in the difficulty of appropriately measuring the export sector. The traditional measure governments and most analysts use is the growth of total exports as a share of GDP growth. This measure indicates that export growth has accounted, on average, for almost 40 percent of the total growth in real GDP since 1990—rising to almost 60 percent since 2000.

Yet these numbers, portraying a dominant and growing role of exports, are at odds with the fact that China was one of the few countries that escaped the great 2008–09 global downturn without a major economic slowdown—suggesting that internal growth played an important role. That’s one reason other economists have used a very different measure: growth in net exports (total exports minus total imports) as a share of GDP growth. By that metric, exports contributed only between 10 and 20 percent of China’s annual 10 percent GDP growth in recent years.

We contend that both measures are misleading. Using total exports neglects the fact that many of China’s export shipments include a fair number of imported goods that are reassembled, combined with domestic content, or otherwise modified before being exported. Failing to remove these imports from the total export figure overstates how much value exports contribute to GDP. On the other hand, a strict net export measure (exports minus imports) underestimates the contribution of exports to GDP, because many imports aren’t used in assembly and exported but rather sold to Chinese consumers and businesses.

Here's a chart showing the shift in growth dependency from McKinsey:

Read A truer picture of China's export machine here.