Engineers have conducted a test-run of the Beijing-Shanghai high-speed rail link, days before its public launch.
Officials, reporters and company bosses were on board for the 300 km/h (190mph) train’s maiden voyage, which the government has promised will halve the journey time to under five hours.
China is planning to roll out high-speed lines across the country.
But the project has come under fire for its high cost - the Beijing-Shanghai line cost 215bn yuan ($33bn; £21bn).
And the government has earmarked a further 700bn yuan for the rest of the project, which would see 16,000km of track being laid by 2020.
Police have clashed with demonstrators in the Italian Alps over the construction of a new high-speed rail link with France.
Tunnelling is set to start for a line from Turin to Lyon, which is expected to cut the travel time by nearly half.
Local residents built barricades to prevent heavy machinery from starting work in the picturesque Val di Susa, in northern Italy.
Police used fire hoses and tear gas to disperse them.
San Jose Mercury: Central Valley plan snags on politics
The plan for high-speed rail in California is to start on the Fresno side of the San Joaquin River, between Bakersfield and Chowchilla, and go until the money runs out.
The Central Valley, for many reasons, is a practical place to begin. The land is broad and flat and relatively inexpensive, and the federal government, which is contributing billions of dollars, requires it.
The first section will one day form the spine of a system connecting Los Angeles to San Francisco, officials say. But there is no money guaranteed to build the rest, and the initial tracks, through towns like Wasco and Madera, are conspicuously far from where most people live.