Risks of investment-driven expansion worry analysts

Although 2013 turned out better than expected in many ways, risks still overhang the Chinese economy, with analysts warning that investment-driven growth can't be sustained indefinitely.

The world's second-largest economy expanded 7.7 percent in 2013, exceeding the official target of 7.5 percent and coming in slightly above market expectations, the National Bureau of Statistics announced on Monday.

Ma Jiantang, the bureau chief, said investment was the chief driver of the economy, accounting for 54.4 percent of overall growth - 4 percentage points more than in 2012.