Bro really don't know the distribution of Taiwan's airports. Taiwan airports on the west coast, whether military or civilian, are concentrated in four cities. The advantage is that aircraft from military airports can be quickly transferred to civilian airports, but the problem is that the PLA does not need to invest too much reconnaissance unit to monitor these airports. For example, Pingtung Base is only 15 kilometers away from Kaohsiung Airport, which is very close from the eyes of reconnaissance UAV. Moreover, these airports on the west coast are very close to the mainland, such as Taipei's Songshan Airport, Taoyuan Airport, Hsinchu Airport, and Qingquan Port Airport, are even within the range of extended-range 300mm rockets. After all, What exactly prevents the PLAF from destory ANY available runway in wartime?
I emphasize again that ROCAF never thought that the air bases on the west coast, whether military or civilian, could last long. Their core assets have always been Zhihang and Jiashan on the east coast.