Finance Minister Koo Yun-cheol said Friday a live performance by K-pop supergroup BTS this weekend is expected to generate trillions of won in economic value in South Korea. The seven-member group will take to the stage under the title "BTS The Comeback Live: Arirang" at Gwanghwamun Square in Seoul on Saturday to celebrate the release of its new studio album, "Arirang," its first in nearly four years. "This concert is expected to generate trillions of won in economic value, but its intangible ef