As China undergoes a sweeping economic transition, its regions are also in the process of embracing change. The powerhouses of yesteryear must adapt or risk falling behind, as traditional industries become less reliable growth drivers and new sectors take prominence. In this series, we explore three representative areas of the country as they attempt to navigate this rapidly changing environment. One morning in December, Zhang Li showed up for work as normal at Everwin Toys in Dongguan to find a...