Zhihu

Zhihu, roughly meaning do you know, launched in 2011 as an invite-only Q&A site and grew into China's biggest knowledge community. Users write long, often expert answers to questions ranging from physics to relationship advice, and its brand promise is serious, high-quality discussion.

Its trending list, rebang, differs from WeiboSina's microblogging platform, China's closest equivalent to X (Twitter), whose trending hot search list functions as the country's public agenda meter.'s hot search: it reflects what China's educated, white-collar internet users are puzzling over, not just what entertains them. Questions like how to evaluate a new policy, product, or social phenomenon regularly draw thousands of analytical answers.

Zhihu's influence extends beyond its own app: its answers are screenshotted and reposted across WeChatTencent's super app that combines messaging, social feeds, payments, and millions of built-in mini programs, and is effectively the default operating system of daily life in China. and Weibo, and its career, consumer, and tech threads are a rich source of context. For UnboxChina, Zhihu's hot list is a P0 source because it surfaces explanatory angles other platforms miss.