Bloomberg writes that growth in China's economy has long centered on the coast, where Shanghai and the Pearl River Delta form some of the world's most productive regions on their own. But now that tide of internal migration that drew hundreds of millions of workers from the farm to factory is shifting, and lifting the economic prospects of the country's interior. As big-city living costs rise and job openings become less abundant, more migrants are now leaving China's urban centers than new ones arriving, according to Oxford Economics Ltd...The shift should benefit inland provinces, especially in southwest regions like Sichuan, as companies move production to take advantage of lower costs while remaining connected to coastal export hubs and industrial clusters...Southern and northwestern provinces are are likely to keep expanding relatively fast as they benefit from catch-up growth, fiscal support and geographic location, while the northeast is likely to remain the slowest-growing region as population declines and coal mining consolidates more in inland provinces.

The New York Times reports that the Chinese government systematically dismantled C.I.A. spying operations in the country starting in 2010, killing or imprisoning more than a dozen sources over two years and crippling intelligence gathering there for years afterward. Current and former American officials described the intelligence breach as one of the worst in decades. It set off a scramble in Washington's intelligence and law enforcement agencies to contain the fallout, but investigators were bitterly divided over the cause. Some were convinced that a mole within the C.I.A. had betrayed the United States. Others believed that the Chinese had hacked the covert system the C.I.A. used to communicate with its foreign sources. Years later, that debate remains unresolved. But there was no disagreement about the damage. From the final weeks of 2010 through the end of 2012, according to former American officials, the Chinese killed at least a dozen of the C.I.A.'s sources.