In addition, chat in Chinese video games is subject to similar or even wider restrictions as elsewhere on the Chinese Internet. For example, the chat in the international, English-language Chinese game Genshin Impact censors not only swear words but also words such as Taiwan, Tibet, Hong Kong, Falun Gong, Stalin, Hitler and Putin. A study of about 200 Chinese games found out that over 180,000 words have been subject to blacklisting. Education and science Censorship is part of knowledge production and education since 1949 and organized and sustained within universities, academies, and schools. In authoritarian countries, censorship is not "from afar", but censorship gains power precisely when members of these organizations respect the political red lines and politically sensitive topics. Censorship and self-censorship are closely related in politically controlled organizations like universities and schools in China. Educational institutions within China have been accused of whitewashing PRC history by downplaying or avoiding mention of controversial historical events such as the Great Leap Forward, Cultural Revolution, and the Tiananmen Square protests of 1989. In 2005, customs officials in China seized a shipment of textbooks intended for a Japanese school because maps in the books depicted mainland China and Taiwan using different colors, implying Taiwan was an independent state. In a January 2006 issue of Freezing Point, a weekly supplement to the China Youth Daily, Zhongshan University professor Yuan Weishi published an article entitled "Modernization and History Textbooks" in which he criticized several middle school textbooks used in mainland China. In particular, he felt that depictions in the books of the Second Opium War avoided mention of Chinese diplomatic failures leading up to the war and that depictions of the Boxer Rebellion glossed over atrocities committed by the Boxer rebels. As a result of Yuan's article, Freezing Point was temporarily shut down and its editors were fired. New Threads, a website for reporting academic misconduct in China such as plagiarism or fabrication of data, is banned in China. A new standard world history textbook introduced in Shanghai high schools in 2006 supposedly omits several wars; it mentions Mao Zedong, founder of the PRC, only once. In a FRONTLINE segment, four students from Peking University are seemingly unable to identify the context of the infamous Tank Man photo from the 1989 unrest sparked by Peking University students, though possibly, the students were feigning ignorance so as not to upset the party official who was