By Vivian Wang and Joy Dong Source: The New York Times For Meng Shan, a 48-year-old urban management worker in the Chinese city of Nanchang, retirement can’t come soon enough. Mr. Meng, who is the equivalent of a low-level, unarmed law-enforcement official, often has to chase down unlicensed street vendors, a task he finds physically and emotionally taxing. Pay is low. Retirement, even on a meager government pension, would finally offer a break. So Mr. Meng was dismayed when [...]