My comment:
(a) I do not know. Sometimes I feel like the child in Emperor's New Clothes. Manythings Taiwan does, I just feel ridiculous. This is one. (Another is Taiwan's claimed economic exclusion zone (EEZ) is almost at the door of Batanes http://en.wikipedia.org/wiki/Batanes
, where a shooting took place and Taiwanese fisherman was killed.)
(b) For years I tried in vain to find a map (official or unofficial) for Taiwan's Air Defense Identification Zone (ADIZ). Now Taiwan's Ministry of Defense (MOD) publicized one, which includes a large swath of southern China! (Maybe China prefers Taiwan to claim the WHOLE CHina, and would freak out if Taiwan's ADIZ excluded Chinese mainland.)
Here is the official map in a Dec 3, 2913 presentation by MOD.