CLEAN : Hundreds join a fierce pillow fight in Hong Kong

The video captures the excitement and personal experiences of participants at the 4th annual International Pillow Fight Day in Hong Kong. It highlights the fun and joy of the event, which is held in 100 cities worldwide as a non-commercial, non-political event for people to relieve stress.

Describe the atmosphere and feelings conveyed by the speaker regarding the Pillow Fight Day.

What does the speaker mean by saying they have 'feathers in my heart'?