Where does coir raincoat cucumber come from in Korea?

Coir raincoat cucumber belongs to Shandong cuisine and is popular in Shandong and Beijing. It is a traditional local dish. Doesn’t belong to Korea? Doesn’t belong to Korea? Doesn’t belong to Korea? (Say the important words three times)

I hope that those who have thought about this question should have a look in their brains and don’t let this nonsense spread all day long. China We have a vast land and abundant resources and a 5,000-year-old culture. Don’t give it away to these traitorous lackeys.