Route 312 is the Chinese Route 66. It flows three thousand miles from east to west, passing through the factory towns of the coastal areas, through the rural heart of China, then up into the Gobi Desert, where it merges with the Old Silk Road. The highway witnesses every part of the social and economic revolution that is turning China upside down.

In this utterly surprising and deeply personal book, acclaimed National Public Radio reporter Rob Gifford, a fluent Mandarin speaker, takes the dramatic journey along Route 312 from its start in the boomtown of Shanghai to its end on the border...