Top 10 Chinese tech and engineering marvels that amaze the world (5)

Two of China's high-speed trains reach speeds of 420 km/h during test runs in Zhengzhou, Henan province on July 15, 2016. (Xinhua/Zhu Xiang)

5. High-speed train passes 420 km/h speed test

China carried out an unprecedented high-speed train test on July 15, 2016, during which the passing speed of two trains reached 420 kilometers per hour. The experiment, carried out by China Railway Corporation in Zhengzhou, Henan province, set a world record.

The success of the experiment demonstrates China's mastery of the bullet train's core technologies. It also shows that China's high-speed train technology ranks among the most advanced in the world.