The turning up at the eaves gives one the sense of flight; hence, the term "flying eaves" is used to describe the feeling of freedom, majesty, grace, and independence associated with birds like the swallowtail.
林添福說：「湛碧無雲的藍天，把飛入天際的燕尾襯托得出色無比。這種寧靜的畫面，讓人絲毫感覺不出此處是最前線的戰地。」