But these are tough choices. On one hand, failure to cool down the economy would have serious consequences for China's long-term growth. On the other, a hard landing on China's part would shake the confidence in emerging markets and set back the global economy by many quarters, if not years.

The US' attempts to blame an "undervalued" yuan for its economic woes are by and large without merit. Nevertheless, it should be recognized that a stronger yuan is not only beneficial to the US, but also in the interest of China, because Beijing needs to promote structural adjustment and contain spillover inflation.

Now a new argument for the revaluation of the yuan is gaining ground: China must choose between maintaining large current account surplus and lower reserve accumulation, that is, have fewer dollars to plough into the US government securities. Lower reserve accumulation means less central bank intervention in the foreign exchange market, which in turn means tolerating greater yuan revaluation.

Given that the developed world is unlikely to move toward policy normalization anytime soon, capital flows will probably be lopsided at a time when China is trying to rein in inflation and deflate asset bubbles. Like other emerging economies, China has to strengthen its management on cross-border capital inflows, even though some of them are not speculative in nature.

China's leadership has stated repeatedly that nothing will be done to destabilize the sovereign bond market. And we expect the likes of the US and the eurozone to act responsibly toward their creditors. The US is debasing its currency with QEII, and President Barack Obama's tax deal has failed to address the deficit and allay the fear of its creditors. So this year could see China sending a clear message to the US: Do not expect any more munificence.

The lack of alternatives to the dollar as a reserve currency has bred a sense of security within the US Treasury and the Federal Reserve. A reduction in Chinese buying (when China reduces its current account surplus and diversifies away from US dollar assets) will be felt in the US Treasuries' market. Some in Washington may dismiss this as a bluff, but surely a healthier US fiscal balance is in everyone's interest. Like China, the US also needs to make more sacrifices. Of course, we have noticed that the sacrifices in the US so far are not fairly borne among Americans.

As for the eurozone, while voicing its strong support, China must urgently seek clarification on whether its current holdings of periphery debt will be part of any restructuring plan. According to market observers, the numbers for Ireland and Greece don't add up. Until such clarification is provided, or the eurozone comes up with a permanent resolution mechanism, I do not think China should commit itself to supporting the eurozone by buying government bonds directly, because of the risk of turning good money bad.

In aggregate terms, though, the eurozone remains an attractive investment destination, with a strong institution (for now) in the form of European Central Bank and Germany's fiscal strength. China wants to see the eurozone carry out necessary reform and act in a responsible manner, but the State Administration of Foreign Exchange's primary responsibility to the Chinese people is value preservation.

There is much to be done in 2011. China should be bold and face up to the responsibilities, but it should also demand the rest of the world to reciprocate.

The author is president of China Society of World Economics, a former member of the monetary policy committee of Peoples' Bank of China, and former director of the Chinese Academy of Social Sciences' Institute of World Economics and Politics.