From VOA News:
More than three decades after it began, China's one-child population control policy has some unintended consequences. Because of a traditional preference for boys, thousands of couples abort female fetuses, and the Chinese government says that last year, 119 boys were born for every 100 girls.
The shortage of young women is pushing some families turn to human traffickers to find wives for their sons. The traffickers often go to neighboring Burma, Mongolia, Vietnam, Laos and North Korea to buy or kidnap women.
Members of Burma's Kachin Women's Association comfort three young women sold to Chinese families by human traffickers. The women, aged between 16 and 18, came to China with the promise of a better life. But they found themselves sold as brides to men in rural areas for as little as $700, and kept as virtual prisoners.