In a blink of an eye, it’s been ten years since Zhihu. In 2010, Sina, Tencent, NetEase, and Sohu were all engaged in Weibo and launched a war for people. At that time, the form of microblogging had been proved successful by foreign teachers Twitter, while the prototypes of Q&A websites Quora and Formspring were just hobbled and their future was uncertain. Soon, Sina Weibo came out of the circle with the aura of "onlookers changing China", but it will take a few years for people to truly realize the power of Zhihu. Now, Zhihu has accumulated nearly 44 million questions and 240 million answers, making it one of the largest sources of original content on the Chinese Internet. In the past ten years, China has entered the era of mobile Internet from the PC Internet, the content industry has flourished, and the Internet has profoundly affected Chinese society as never before. The massive content accumulated by Zhihu, coupled text message service with the continuous generation of new content every day, has deeply participated in shaping the vision and thinking of Chinese netizens. On April 7, 2011, less than 5 months after the site opened, the president became the 6332nd user of Zhihu. As a deep and old user of Zhihu, the president is willing to use "two Zhihus" to describe the ten years of Zhihu he has observed. From the aspects of user composition, content form and business model, we can see the relative existence of "two Zhihu". They are inside and outside of each other, and together they form a wonderful scene of Zhihu.