BEIJING - China is operating a high-speed railway network with a combined length totaling 7,531 kilometers, the world's longest, said Chinese Railways Minister Liu Zhijun Tuesday.

He made the remarks in Beijing at the 7th World Congress on High Speed Rail, the first time the congress has been held outside Europe.

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Liu said China's high-speed railways have been operating well, with reliable equipment and a good safety record.

As a modern transportation method, high-speed trains can travel at speeds as high as 350 kilometers per hour.

Launched in 1992 by the International Unions of Railways, the congress exhibits the world's high-speed railway development.