China's top economic planner approved 70 fixed-asset investment (FAI) projects in the first five months of the year, with combined investment totaling 667.2 billion yuan (about US$93.59 billion), official data showed.

The projects were mainly in the high-tech, energy and transportation industries, according to the National Development and Reform Commission.

In May alone, 14 FAI projects worth 288.8 billion yuan were approved, the data revealed.

Fixed-asset investment, one of the drivers of China's economy, went up 4% in the January to May period, according to data from the National Bureau of Statistics.