Jiaozhou bay bridgeReuters

A huge change is underway in China.

Over the next 10 years, the country plans to move 250 million people — the equivalent of Indonesia's entire population — into the country's rapidly growing megacities.

To accommodate that enormous migration, the country has invested billions of dollars in massive infrastructure projects. Some are already complete, while others are still in the works.

From highways that span the continent and the largest wind-power base in the world to enormous airports and new cities in the desert, China is showing what it really means to do big things.

Robert Johnson and Vivian Giang contributed to an earlier version of this story.

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