What does dried fish have to do with Yoon Park's family moving to Seoul?

On tvN's 'House Cook Master Baek' on October 13, the cast members took on the cooking method using dried fish in the refrigerator.

During this, Yoon Sang asked Yoon Park, "Do you have dried fish in your house?" and he replied, "That was the reason my family was able to come up to Seoul," raising interest as people wondered what he was talking about.

He explained, "My grandfather earned a lot of money through his dried fish store. That's why I was told we had a lot of dried fish in storage."

Time to open a dry fish shop!