If Wikipedia was never blocked in China
This is a statistical essay. Wikipedia is blocked in China since 2019 (and since 2015 for Chinese), while intermittent blocks from 2004 prevented its normal growth in China and has today the 14th position and 1.26 million articles, as the blocks in China stifled Chinese Wikipedia's growth and it depends mostly in Taiwanese, Hongkonger and Chinese American users. But how we would see Chinese Wikipedia to be if China was a democratic state or was following the more tolerant censorship policy of Vietnam?
Chinese Wikipedia would be the largest Wikipedia, possibly having even 10 million articles, billions of monthly pageviews (something that would demand more servers for Wikimedia), while Cantonese would possibly have a number above a million articles. Wikipedias in Tibetan, Uyghur, (probably with a script converter) and Chinese varieties would have a functional amount of active users and articles, in contrast with the evident neglect of today. Many more languages of China, such as Salar (a Turkic language), Manchu, Jin Chinese and Sichuan Yi would have their one wikis while Kazakh, Mongolian (possibly with script converter because Mongolian script is used in China) and Korean would have more users and articles.
Already the block of June 2004, although lasted only twenty days, caused a dip in indicators for nearly a year. From nearly 500 users in May 2004 the block of June brang a decrease that was filled seven months later.
Chinese Wikipedia would begin with a good growth in 2004 and the later rapid growth of users would drive a the ascension of Chinese Wikipedia to overtake German and after English. Without the block Chinese would have around 900 to 1,200 users by December 2004. In 2005 modelled to the growth of Japanese, it would continue to grow fast but the real growth would begin around 2006-07, where users would gradually grow to reach +120,000 by 2008. Articles would also grow with a fast pace and it would go to overtake the most Wikipedias, to reach later German and English; despite that 2005's China income was just around $200 and times larger in Japan, the income gap in this calculation would be filled by the population which is 11 times larger than Japan's.