I couldn't find any reference to it being blocked except in that article. A test seems to show it's not blocked though: https://viewdns.info/chinesefirewall/?

I couldn't find any reference to it being blocked except in that article. A test seems to show it's not blocked though: https://viewdns.info/chinesefirewall/?domain=sci-hub.tw https://viewdns.info/chinesefirewall/?domain=sci-hub.tw Closest mention outside of original article is this The Verge article (2018), saying that they blocked China and Iran for a while because of too many requests from users; but this is sci-hub blocking not China banning https://www.theverge.com/2018/2/8/16985666/alexandra-elbakyan-sci-hub-open-access-science-papers-lawsuit https://www.theverge.com/2018/2/8/16985666/alexandra-elbakya...