Why do fans buy flags?

Fans buy flags at concerts, competitions or other related activities to support their favorite stars or teams. The flag will be printed with the logo and slogan of the star or team, and neon lights or colorful lights will be installed on the flagpole to highlight the presence of the fans in the crowd and increase the momentum of the fans for the star or team. Buying banners can also express fans' love and support for their favorite stars or teams and cheer for them.