Beautiful white thing...

Hello...

Yesterday, while me and Dion is sitting in the class, we got nothing to do so we look out of the window. Directly outside the window of our class is a tree. It has pink flowers on top of the tree.

Suddenly right infront of our eyes, a group of white thing flew out from the tree. No one seem to notice it. The group stay there for quite a while and them flew away with the breeze.

I wonder what it is???

Bye bye... I hope that I can get an answer soon... ^^