Unlike the other Avatars Yangchen understood Aang 's reluctance to kill Fire Lord Ozai due to the Air Nomad culture of pacifism .
The other Avatars advised Aang to end the Fire Lord 's threat to world peace without hesitation .
Unlike the other Avatars , who advised Aang to end the Fire Lord 's threat to world peace without hesitation , Yangchen understood Aang 's reluctance to kill Fire Lord Ozai due to the Air Nomad culture of pacifism .