Taiwan, Asia’s Secret Air Power

choi

Ian Easton, Taiwan, Asia’s Secret Air Power; A look at what Taiwan is doing to ensure its air defense and why it matters for the United States and the region. The Diplomat, Sept 25, 2014.
thediplomat.com/2014/09/taiwan-asias-secret-air-power/

Note:
(a)  
(I) For "Tri-Service Hengshan Military Command Center," see Hengshan Military Command Center  
en.wikipedia.org/wiki/Heng_Shan_Military_Command_Center

I did not hear of it while in Taiwan. However, in Taiwan, "Tri-Service" is used only in the title of
(ii) 衡山指揮所
zh.wikipedia.org/zh-tw/%E8%A1%A1%E5%B1%B1%E6%8C%87%E6%8F%AE%E6%89%80

* The name 衡山 is after a mountain in Hunan province of China.
zh.wikipedia.org/zh-cn/%E8%A1%A1%E5%B1%B1

(b) "On the other side of the city, buried inside a wet rocky outcropping near the campus of National Taiwan University, lies another tunnel complex, the Air Operations Center. Known affectionately as 'Toad Mountain' by Taiwanese air force officers, this facility oversees one of the most robust air and missile defense networks on the planet."
(i) Joint Air Operations Center  聯合作戰指揮中心
(ii) 蟾蜍山
zh.wikipedia.org/wiki/蟾蜍山

(c) "And, like every other Taiwanese military facility, it [聯合作戰指揮中心] has multiple back-ups. Just in case. One of those back-ups is located on Taiwan’s east coast inside Chiashan 佳山 [花蓮港的北方] or 'Optimal Mountain,' not far from the mouth of a gorge cut through pure white marble. Unlike the gorge, however, no tourists are allowed inside this billion dollar bunker complex. According to first-person accounts, the base is an entire military city built inside a hollowed-out mountain. Not only does it have space inside for parking, arming, and repairing over two hundred fighter aircraft, it also has its own hospital and multiple gas stations serving jet fuel. With ten blast doors that exit out to multiple runways"

A blast door is an (maybe extra) reinforced door to a blast door.  Search "blast door" in blast shelter
en.wikipedia.org/wiki/Blast_shelter
(d) "Ninety miles down the coastline, Taiwan’s air force is further bolstered by the Shihzishan 石子山 [part of 都蘭山] or 'Stone Mountain' complex at Chihhang Air Base 志航空軍基地 [台東市東北方]. Though somewhat smaller than Chiashan, its labyrinthine tunnels can still shelter some eighty aircraft."