Image copyright China Photos/Xinhua Image caption The Shaanxi-Beijing high-speed rail running the new route between Zhoukou and Lanzhou
The trial run of a prototype high-speed rail system from China’s Shaanxi province to Beijing has been delayed – for the third time.
This time it was late because the new route between Zhoukou and Lanzhou was undergoing repairs.
It was originally planned to run at almost 670 kilometres per hour (409mph), but the trip was downgraded to 537km (342mph).
The aim is to run the high-speed rail in 2020, when the line becomes operational.
If the final stretch between Zhoukou and Lanzhou is completed by 2020, it would be the fastest connection in the world at 437km per hour.
Such a speed will double the trip from the country’s western regions to the capital.
How high-speed rail was developed
Image copyright Mike May / Associated Press Image caption The new system is being modelled on the Japanese Shinkansen high-speed train system
China had already built a high-speed track between Beijing and Xi’an.
In 2000, the country signed a treaty with Russia allowing its citizens to go to Moscow and Moscow to Xi’an without using a visa.
That link has now become part of the new Shinkansen high-speed system.
China last year started building another high-speed rail line between Shanghai and Tianjin – a 310km link, to be completed in 2020.
Image copyright Weibo Image caption A shorter line will also be constructed between Shanghai and Xian, which is expected to be completed this year