As I recall, Blizzard decided to remove skeletons and some other things from World of Warcraft years ago in order to enter the Chinese market.
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However, in this case, we're at an Asian (not Chinese) esports event where one should be free to express their opinion. It is not as if we don't see skeleton cosplay on esport events being banned, or that Germany demands Wolfenstein esports events (?) don't contain blood and Nazi paraphernalia. It is not as if the USA complains about a nipple on TwitchCon in Amsterdam. This is about a country applying censorship beyond their jurisdiction.