This type of wide-mouthed bowl was used everyday in Korea, not exclusively for tea drinking. But when it was introduced to Japan around the early 16th century, its imperfect appearance evoking the aesthetics of wabi-sabi caused it to be repurposed as tea bowls in Japan. Possibly produced in one of the kilns established by the trading office (Waegwan) in Busan, southern Gyeongsang province, this type of bowl was sold to Japanese elite collectors.