As a safe, reliable, fast and comfortable, large-capacity, low-carbon and environmentally-friendly transportation mode, High-Speed Rail (HSR) has become the main mode of transportation for the development of the world transportation industry. At present, many countries and regions have been studying, planning and establishing high-speed rails. As of December 31, 2017, the world’s HSR has a total operating mileage of about 40,000 km, and 20,000 km are being planned and constructed. The popularity of HSR brings convenience as well as many doubts to the public. Therefore, as one of the popular science series of “A Brief History of High-Speed Rai
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