Baidu Baike (; , also known as Baidu Wiki) is a semi-regulated Chinese-language collaborative online encyclopedia owned by the Chinese technology company Baidu. The beta version was launched on April 20, 2006, and the official version was launched on April 21, 2008, edited by registered users. it has 25.54 million entries and more than 7.5 million editors. It has the largest number of entries in the world of any Chinese-language online encyclopedia. Baidu officially stated that the Baidu Encyclopedia, while establishing an online encyclopedia, also serves as the information storage space provided by Baidu for netizens. Baidu Baike advocates "equality, collaboration, sharing, and freedom" in spirit, and technically combines this network platform with search engines to meet users' information needs at different levels. When searching using Baidu search engine, if Baidu Baike has included the entry corresponding to the search term, its link will usually be ranked at the top of the search page. Baidu Baike has been criticised for its censorship, copyright violations, commercialist practices and abundance of unsourced information. In March 2021, Baidu Baike only allows users whose "wiki level" is greater than 4, have over 85% on editing pass rate and who are in the "wiki master group", or users whose "wiki level" is greater than 6 and have over 85% on editing pass rate, to view article history. Baidu Baike stated that this limit is to "protect the accuracy of articles, and avoid distraction on the false information on past versions." History Baidu Baike was founded by Robin Li in April 2006, following the Chinese government's decision to censor Wikipedia in 2005. The beta version of Baidu Baike was launched on April 20, 2006. From April 5 to 20 for a period of internal testing. According to the serial number in the entry address bar, the first 10 entries were Baidu Baike, "Entries", an edit experiment (sand table page, has been deleted), Mántou (steamed buns), orchid cultivation (deleted due to typos), Yandang Mountain, Lingfeng, Dalongqiu, Wudafusong and Red Food. After 20 days, it had more than 300,000 registered users and more than 100,000 articles, surpassing the number in Chinese Wikipedia. it had 16 million articles and more than 6.9 million editors. Baidu's William Chang said at WWW2008, the conference of the World Wide Web Consortium, "There is, in fact, no reason for China to use Wikipedia ... It's very natural for China to make its own