After being unblocked, the Chinese Government has re-blocked all of Wikipedia.
With the goal of Wikipedia being to provide free access to the sum of all human knowledge, China had a choice of either blocking everything or just blocking what it does not like.
Its one thing to block sets of seemingly random sites, but with Wikipedia its different.
Wikipedia is comprehensive and its content is deeply interlinked. Censorship can be detected by the hole it makes. If China just blocked what it didn’t like it would take some simple analysis from a web-crawler from behind the great firewall to see the scissor marks and work out what has been censored.
And that in itself would generate some interesting conversation. conversation that I’m sure Beijing would rather didn’t happen.