Explained in Instagram Photos

https://jasperjzms198.image-perth.org/how-did-we-get-here-the-history-of-kpop-b2b-told-through-tweets

K-pop Lightsticks: More Than a Glow<br/>K-pop lightsticks are a symbol of fandom, transforming concerts into glowing spectacles. In 2025, high-tech lightsticks from groups like NCT and ITZY feature Bluetooth and customizable lights