I just wrote an answer to a question about Japan, but it's rejecting all my attempts to enter any kanji (Chinese characters used in Japan) like this guy with this error message:

"Body cannot contain 'X'" popup message

Hiragana (すし) and full-width numbers (01) appear to be OK. What's going on?

  • 2
    Let's see if they work in a comment… oh, they don't either! i.imgur.com/UpDNx46.png
    – o0'.
    Commented Aug 13, 2015 at 15:11
  • 2
    I get a 500 Internal Server Error in the console when I try to post any CJK ideographs (I don't think it makes any distinction as to whether it's hanza, kanji, or hanja, so it's not limited to Japanese; the code points are the same for Korean and Chinese).
    – choster
    Commented Aug 13, 2015 at 16:14
  • Based on this post on meta.se, looks like we should now be on the allowed list. Can you test and confirm?
    – Gagravarr
    Commented Aug 14, 2015 at 14:34
  • 唔該 It looks like TSE is whitelisted from the ban.
    – choster
    Commented Aug 14, 2015 at 16:59
  • Did you mean "kana", not "katakana"?
    – Golden Cuy
    Commented Aug 31, 2015 at 3:02
  • 1
    @AndrewGrimm Meant "hiragana", fixed; thanks! Commented Aug 31, 2015 at 4:26

1 Answer 1


A-ha. @jmac says

We were getting a deluge of Chinese-language spam, and it was evolving so we just blocked Chinese characters. At some point in the future we will re-enable Chinese.

Apparently, it means some usernames can't be entered either. @snailboat has found a workaround.

  • 12
    Let's hope there's no future deluge of English-language spam. Commented Aug 14, 2015 at 9:16
  • They seem to have reenabled Chinese text and now the spam is back. I left a detailed comment at the "A-ha" link above, but basically it's a Chinese service to get fake US college diplomas. Commented Sep 22, 2015 at 1:05

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