products." When searching with the search engine Baidu, the link of the corresponding entry in Baidu Baike, if it exists, will be put as the first result or one of the first results. In March 2021, Chinese netizens claimed that South Korean netizens changed their entries related to Chinese history on a large scale through the historical version comparison function of Baidu Baike. The exposure of this incident had a negative impact on Baidu Baike. In order to prevent such incidents from recurring, Baidu Baike stipulates that the historical version function is only available to users of the "Baike Expert Group" with a level 4 encyclopedia and a pass rate of over 85% and professional users with a level 6 encyclopedia and a pass rate of over 85%. Open, ordinary users no longer have the right to view historical versions of entries and use the historical version comparison function. Baidu Encyclopedia officially claims that this is to "ensure that the majority of netizens obtain the accuracy of entry information and avoid interference from outdated information in various historical versions". Features In addition to the search engine, Baidu Baike also has an information tool that is divided into twelve areas: nature, culture, geography, history, life, society, art, personalities, economy, science, sport and current events. Apart from encyclopedias, there are also two other services provided by Baidu, namely Zhidao, a question-and-answer website and Post. Articles are written and edited by registered users and reviewed by administrators prior to publication. There is no formal way to contact administrators. Contributions from registered users are evaluated under a scoring system. Although the test version was called the Baidu Wiki, official press releases and pages from Baidu Baike itself stated that the system for this was not a Wiki. Baidu Baike does not use MediaWiki. Baidu Baike's visual style is simple. In articles, only bolding and hyperlinks are supported. Comments are listed at the bottom of each page. In addition to its Wiki-like functions, the site supports editing, commenting, printing articles and viewing an article's history. Users can access multiple editing functions including: an image upload system where files weighing less than 2 MB can be added to Encyclopedia articles; a categorization system called open category (similar to Folksonomy used in Wikipedia), where an article can be categorized with up to 5 categories; a separate edit box for notes and references and external links. Principles In