Reacting to analysts who say Beijing is buying risky bonds in Greece, Ireland, Italy, Portugal and Spain in order to gain political influence in the EU, Song said the purchases have no "suspicious" motive.

With EU-China trade growing to €480 billion in 2010, the ambassador noted: "We can build stronger trade ties only by investing in a sound EU economy. We hope in this way to bring back the stability of the euro so that in the future we can move ahead [on trade issues] more smoothly."

Song predicted the European Union as such will emerge from the crisis.

But when asked if he thinks China will get its money back from Athens, he answered: "Risk goes along with any kind of investment."

The Chinese diplomat also advised the major eurozone economies to dig deeper into their pockets: "We hope that on the face of the difficulties the euro is facing, the core [euro-using] countries can unite to avoid this crisis."

Looking further afield, Song said he hopes to see the EU and China "fully open up markets" in future.

Trade ties, despite growth of over 30 percent last year, have been bedevilled by accusations of Chinese dumping and counter-accusations of EU protectionism.

Some of the disputes have strategic implications - China is limiting exports of rare earth minerals, used in the arms industry and high-end technology, amid fears it plans to force manufacturers to relocate to China and share intellectual property.

Meanwhile, the EU is sticking by its arms embargo on China in deference to US concerns about its emergence as a military threat.

Song said that China is also limiting rare earth extraction at home for the sake of the environment.

On the arms embargo, he noted: "We have no interest in buying arms from Europe ... Chinese defence capacity has been developing very well over recent years and the EU has lost out on a part of this business."

In an allusion to US influence on the arms embargo, he added the EU should "make decisions on its own" on long-term China relations.