(Photo : NCT, RES VELVET, BLACKPINK, SEVENTEEN) Despite the pandemic, leading K-pop groups who released their much-awaited songs this 2020 were given the honors for "Best-Selling Albums" and "Best Digital Songs" including BTS, BLACKPINK, Red Velvet, NCT, SEVENTEEN, and more! On Dec. 21, Monday, Gaon Charts unveiled their accumulated data for K-pop acts with most sold albums as well as best digital songs, and amazingly, BTS and BtoB's Zico topped the respective lists. Gaon Chart's "Best-selling Albums" 2020 According to the accumulated data of Gaon Charts, the preeminent K-pop group BTS was a...