As K-pop supergroup BTS returns from a four-year hiatus with its fifth album, “Arirang,” unauthorized merchandise has begun appearing on Chinese e-commerce platforms, a professor has said. Seo Kyung-duk, a professor at Sungshin Women’s University, said via social media that he had received multiple reports from internet users regarding the issue. After checking the claims, Seo said he found that major Chinese platforms including Taobao and AliExpress were selling T-shirts and accessories featuri