On September 8, one YouTube channel unveiled a video of U-KNOW Yunho.
The video showed U-KNOW Yunho making a singing booth with his friends at home.
After designing a singing booth, he prepared all the materials, including cardboard boxes, egg cartons, duct tape and so on.
He then started putting them together according to his initial design.
Soon later, the cardboard boxes became a singing booth with egg carton soundproofing.
Then, U-KNOW Yunho grabbed the portable microphone, went in to the booth and sang songs.
Following his trial, he came out of the booth with a bright smile and said, "It honestly feels like I'm in one of those singing booths."
(Credit= '달라스튜디오' YouTube)