Erwin.. may i know wat airline did u take to US and how much ? It allow stop over 3 days in Taiwan or Japan ?
Usually airlines try to promote their home country with cheap/free stopovers. So like SQ promotes Singapore stopover, while CX provides Hong Kong stopovers. If you want Taiwan / Japan stopovers, look for airlines based in those countries for cheap or free stopovers.
@Erwinlow, I can help abit, replying on your other thread, but I'm in Taiwan now, so expect delays in replying.