According to Yonhap News Agency, the Daegu District Prosecutor's Office in South Korea conducted a "suspicious foreign exchange transaction" seizure and search on the head office of Woori Bank, and conducted an investigation on the bank staff. Previously, the prosecution agency detained and investigated three relevant persons on suspicion of conducting virtual asset transactions without reporting, submitting false certification materials to banks, and remitting more than 400 billion won in foreign exchange overseas, and confirmed the foreign exchange transactions. It was done through Woori Bank. It is speculated that this is a crime committed against the "kimchi premium" that makes Korean virtual currency more expensive than overseas.