本文挑战了传统的diaspora概念，将“两级社会资本”作为预设框架，通过网络民 族志研究了40名“世纪潮一代”在英流寓华人，对比Facebook和微信在构建其跨文化社 会资本过程中的表征和角色，评估社会资本框架的文化适用性和研究通用价值；剖析了 社会网络构建动因与行为主体的关系。研究发现，社交媒体的数字技术在在英流寓华人 的跨文化传播之间进行调解的社会资本形成了动态性和竞争性，超越了其他任何网络参 与对跨文化传播的“溢出效应”；Facebook和微信本身作为不同社交符号带给其参与者 预设信号和文化标签，在构成文化认同过程中表现出趋同和分离的复杂内涵。总体而 言，本研究认为,社交媒体使“世纪潮一代”的在英流寓华人从离散的既定人群中不定期 “脱出”，以“想象融入”和“持续认同”活跃在不同文化集体和社群，实现“双面人 生”。

This research compared and contrasted WeChat and Facebook used by Chinese millennial who lived in UK through examining the quality, application and representation of the framework of “Two Level of Social Capital Analysis”. It employed digital ethnography including participated observation and semi-structured interview, which found: frstly, social media technically enabled intercultural communication between English Chinese represented a dynamic and competitive ?ow which worked beyond any other network in terms of spillover effects. Secondly, Facebook and WeChat played as specific cultural label bringing in such millennial a proposed way while using those two media platforms in the process of self-identification with complexity and fragmentation. To sum up, this study challenged the traditional concept of diaspora and maintained this group of diaspora could flexibly use different social media and imaginably participated in different virtual community which contributing their double life