Butterfly

I found this butterfly flew inside my room when i'm ready to take a bed yesterday.

Just wondering, how this tiny insect entered my room.

My room are guarded with outside insect using net(idk what is it actually) covering the window.

Capturing the butterfly/moth is the best idea that i ever think of at that time..

Well, i choose this is the best picture that i can get...

=3

Is that a butterfly or a moth? Anyone?