DC> You're probably looking for a query along the lines of DC> http://radioscanningtw.jidanni.org/api.php?action=query&list=allpages&apnamespace=14&apfrom=5.
Mwhahahaha, does that look anything like the content of
http://radioscanningtw.jidanni.org/index.php?title=Special:Categories&of... ?
Didn't I say
I.e., all categories (whose category pages MAY be empty) ?