A customer looks at a fan at a discount mart in Seoul, Sunday. Fans have been gaining popularity since last year, driven by high commodity prices and rising fuel costs. Fan sales, which shrank in 2020 and 2021, rose 34.3 percent from April 1 to May 17 compared to the same period last year, following the previous year's 51.7-percent sales increase, according to Emart.YONHAP