知乎启动15周年庆 重启社区首个问题

Core Insights - Zhihu, a professional Q&A community, is celebrating its 15th anniversary on January 26, 2026, marking its official launch in 2011 [1] Group 1 - Zhihu has initiated a series of celebratory activities for its 15th anniversary, including the revival of its first question, "How to use Zhihu correctly?" [1] - The community is also collecting experiences and stories from users to commemorate the milestone [1]