While enjoying a foot massage in Buenos Aires’ Chinatown, I chatted with my masseuse, a Fujianese woman in her late 50s surnamed Wang. Her life, it seemed to me, mirrored that of many recent Chinese immigrants to Argentina. She eats exclusively Chinese food, her friends are fellow Chinese and she still speaks mostly Chinese.While it is not unusual for migrants anywhere to gravitate towards their own community, the tendency appears particularly strong among the Chinese. China’s presence in...