Paragraph Style + Chinese

Question

I am writing a document in English and have to include Chinese terms in both traditional and simplified Chinese. I am wondering, how can I add Chinese in as the language when creating a character style as no chinese language is listed?

Answer 1

I've always thought that ID used language attributes only for hyphenating and spell-checking.  As far as I've noticed, the only effect of the CJK attributes is to disable hyphenation for alphabetic text.  Note that ID does apply Japanese line-breaking rules to characters in Japanese fonts, regardless of the language attribute, suggesting this capability depends on settings hard-wired into the fonts.  (It used to be that Adobe explained Japanese type features in western languages only in the documentation for Illustrator, where the interface can access analogous settings; now that World Tools Pro offers access to the Japanese features of ID in western versions I expect its documentation would be more useful.)
I'm not sure how one might spell-check or hyphenate Chinese, but that doesn't stop me from using CJK language attributes in virtually every job.  I work mainly with scholarly text, mostly in English but with many bits of Chinese both in characters and romanization, as well some Japanese or Korean, and occasionally European languages.  When the text is mostly alphabetic it is worth my while to apply character styles to mark C, J, and K, and I include the language attribute in the char. styles.  I generally need to distinguish traditional Chinese from simplified, and style those separately.  ID's GREP searching makes it pretty simple to apply the styles to anything in the CJK range, though I must decide the language for individual strings, and trad. from simp. Chinese: there are small discrete blocks for Japanese kana and Korean hangul, but not for the Chinese forms used by all three languages, nor for simplified Chinese (or "simplified" Japanese kanji); I generally GREP-search for the whole CJK block ([\x{2E80}-\x{9FBB}]+), eyeballing each string so I can apply the appropriate style.  Note that changing the Chinese attribute from traditional to simplified does not affect either the coding or the appearance of the characters: it's just a label.
As Joel points out, western-language versions of ID don't come with language attributes for CJK languages, although ID readily brings in CJK language attributes when importing MS Word documents.  Once imported, they are available to insert into character styles, and these survive transfer between ID documents.  I get a lot of *.doc files with C, J, and K, and for a long time didn't realize that stock ID lacked the CJK language attributes -- not unreasonable, given that western-language versions of ID come bundled with good Chinese, Japanese, and Korean typefaces.  But note that as Jongware showed back in 2011, finding "unlisted" languages isn't trivial.
The CJK language attributes are of no consequence for print publication (beyond interfering with hyphenating alphabetic text).  Nor are those tags passed on to PDF.  They might be (or might become) useful in other forms of electronic publication, but for now I rely on PDF to ensure consistent handling of the CJK and unusual diacritics (tone-marked vowels for pinyin romanization of Chinese, macrons and breves for romanizing J and K).  On the other hand, once I have segregated C, J, and K with char. styles I might as well apply the language attributes, in case they eventually prove useful in "re-purposing" my ID files.