China will be expecting more input during the restructuring of the international financial system after agreeing on Wednesday to buy the first $50 billion of the International Monetary Fund (IMF)'s new bonds.

The purchase, made three weeks before the Group of 20 Summit that will be held in Pittsburgh, is being seen as an example to the rest of the world of China's commitment.

Chinese think-tank economists said the purchase symbolized the country's "very first step" toward increasing its say in reshaping global financial institutions amid the financial crisis.