Zhihu's "Don't Know Clinic" turns Q&A into a pop-up hospital — Sanlitun queues, then tours

By late 2017 Zhihu had grown from a niche community into a mass knowledge platform, but its 'professional and serious' image made it feel remote to young consumers. The brand's answer was a string of offline experiments that turned knowledge into scenes — and its most famous one was the 'Don't Know Clinic.'

From November 10–15, 2017, Zhihu and Taikoo Li Sanlitun opened a mock hospital in Beijing. Visitors registered real questions at a reception desk, were routed to six departments — internal medicine, oral, psychology, ENT, radiology and surgery — mapped to topics young people cared about such as food, fashion, film and study, consulted with top Zhihu answerers acting as doctors, and finished at a pharmacy counter where they received their 'prescriptions.'

The experience also featured actor Huang Bo's first photography exhibition and 20 collectible Nike sneakers, while brands joined as themed content rather than billboards: Nike, Enjoy, Xiaomi and Quark appeared inside the departments. The run drew queues daily, and Taikoo Li Sanlitun itself helped shape the final creative concept and on-site messaging.

The clinic proved repeatable: after Beijing it toured to Tianjin, then Shanghai Joy City in spring 2018 with two new departments and city-specific content such as a Shanghai food map and scented book pages, then Guangzhou in 2019 with AR surfing. Zhihu's stated goal was not a one-off event but a durable IP that brought its online knowledge into physical spaces — by December 2017 the platform had grown to 21 million questions and 82 million answers.