For most Chinese people in China, WeChat is a sort of all-in-one app: a way to swap stories, talk to old classmates, pay bills, coordinate with co-workers, post envy-inducing vacation photos, buy stuff and get news. For the millions of members of China’s diaspora, it is the bridge that links them to the trappings of home, from family chatter to food photos.
Woven through it all is the ever more muscular surveillance and propaganda of the Chinese Communist Party. As WeChat has become ubiquitous, it has become a powerful tool of social control, a way for Chinese authorities to guide and police what people say, whom they talk to and what they read.