In Chinese border towns like Yinji, cultures collide as large numbers of North Korean defectors resettle into these modest communities. With Korean karaoke bars and restaurants dotting its streets, Yinji looks like a cohabitation success story. It’s what you can’t see, however, that holds the true story: Methamphetamine by the truckload. Over the last decade, increasing numbers of defectors have been responsible for trafficking the largest supply of methamphetamine ever to cross into China. Towns like Yinji are now struggling with a drug addiction explosion among its citizens that threatens the very fabric of their society. Image by Sean Gallagher. China, 2011.