Against the backdrop of global capital and currency market turbulences, it was crucial the G20 finance ministers and central bank governors, who met in Shanghai over the weekend, agree to take concerted actions, including monetary, fiscal and structural measures, to combat downside risks and restore investor confidence.

Their stance will help restore the confidence of global investors and lay a solid foundation for effective and coordinated actions in the future.

They also agreed to "refrain from competitive devaluations" and not target each other's exchange rates for "competitive purposes", a stance that serves as a clear answer to recent market uncertainties.

Since the start of the year, global capital markets have nosedived due to investor concerns that global growth may be faltering and some major economies are resorting to beggar-thy-neighbor quick fixes, such as negative interest rate policies, instead of the time-consuming but more fundamental structural reforms necessary to restore growth momentum.

The G20 communiqu??, which was released on Sunday, shows that the world's major players are willing to act and their stances are close to each other.

In the past, a lack of coordination in announcing the major monetary policy of one country, for instance, has often resulted in competitive actions by others, which has damaged global economic stability and sparked investor panic.

This time, the participants agreed to clearly communicate their macroeconomic and structural policy actions "to reduce policy uncertainty, minimize negative spillovers and promote transparency", which represents clear progress in global policy coordination.

The world economy has been plodding along a bumpy road in its efforts to recover. Major economies have adopted various innovative monetary and fiscal stimulus measures to boost output, but the effects have been barely satisfactory.

This shows that monetary or fiscal stimulation to restore global balances is not enough. And it is even more absurd to attribute all the woes to the monetary policy of one single country.

China has announced that it will not resort to competitive currency depreciation to benefit its exports. The recent changes in the exchange rate of its currency have so far been quite mild if we consider the vast appreciation of the yuan in the past decade. The market should not over-interpret it since a stable yuan is in the interest of China itself, its neighbors and the regional and world economy as a whole.