China's foreign exchange regulator said Sunday the country's return on foreign investment has surged by an annual rate of 32 percent since 2004 to hit 128 billion U.S. dollars last year.

Guan Tao, head of the balance of payment (BOP) department under the State Administration of Foreign Exchange (SAFE), said the SAFE is promoting the yuan's convertibility under the capital account in a prudent and orderly manner and supports domestic institutions and individuals to conduct foreign investment.