Zhihu is a website where questions are created, answered, edited, and organized by the community of its users. Originally based in Chengdu, with creators being from Sichuan, China, its website, zhihu.com, was launched on January 26, 2011. The number of registered users of Zhihu had exceeded 10 million by the end of 2013, and has reached 17 million as of May 2015 with 250 million monthly page views. The number of registered users of Zhihu had exceeded 220 million by the end of 2018 and has accumulated more than 30 million questions and 130 million answers.