Photograph by David Hume Kennerly/Getty Images
Each year hundreds of North Koreans in hiding embark on long, dangerous journeys across China.
China's expectations are rising, with no end in sight. What's next?
Photographer George Steinmetz takes flight to capture a different view of China.
2016 National Geographic Travel Photographer of the Year Contest
Show us your best photos of nature, cities, and people from your travels around the world.