China has built a lot of high-speed railways in the past decade, more than any other country. The report looks at how they did it and what other countries can learn. They had good planning, cooperation between different levels of government, and fast construction. The trains are popular, with 1.7 billion passengers a year. They made sure the trains were priced well and connected to cities. China also focused on training and working together with different organizations to improve technology. They found that high-speed trains can make money if lots of people use them.