South China's Guangdong province, the nation's leading economic powerhouse, is projecting it will end the year with 6.23 trillion yuan ($1 trillion) in GDP, up 8.5 percent from 2012.

It is likely to be the only province in China to reach the milestone, said Zhang Jun, deputy director-general of the provincial reform and development commission.

The province's foreign trade is also expected to surpass $1 trillion in 2013, an increase of 7.5 percent from a year ago, said Zhang.