Soprano Sumi Jo poses after being appointed as honorary ambassador for Busan’s campaign to host the 2030 World Expo, during a ceremony on Tuesday at the LG Arts Center in Gangseo District, western Seoul. She is seen after signing her autograph on her new single “We Will Be One,” which is the theme song for Busan’s bid for the 2030 World Expo. [YONHAP]

BY HALEY YANG [yang.hyunjoo@joongang.co.kr]