First of all, natural resources. There are basically no large oil tankers and other operations in North Korea's sea area. The sea area is basically pollution-free, with low water temperature all year round, slow growth of sea cucumbers, sufficient nutrient accumulation, no large-scale aquaculture and no drug residues. Secondly, it is the advantage of the times. North Korea is a developing country, and sea cucumber fraud basically does not exist. The unique six rows of North Korean sea cucumbers create a new brand of sea cucumbers.