Plese remove page prefix at default category sortkey on zhwp:
$wgCategoryPrefixedDefaultSortkey = false;
Version: unspecified
Severity: enhancement
URL: http://zh.wikipedia.org/wiki/Wikipedia:%E4%BA%92%E5%8A%A9%E5%AE%A2%E6%A0%88/%E6%8A%80%E6%9C%AF#.E6.94.B9.E5.96.84.E9.9D.9E.E6.9D.A1.E7.9B.AE.E5.90.8D.E5.AD.97.E7.A9.BA.E9.97.B4.E7.9A.84.E9.BB.98.E8.AE.A4.E5.88.86.E7.B1.BB.E6.8E.92.E5.BA.8F