Hairtail was born in the deep sea, but why did it become the most common seafood in China?

Hairtail becomes civilian seafood mainly because of the following points:

Hairtail itself has a high yield, and hairtail, like the four major fish in freshwater fish, has a large number. Hairtail transportation cost is low, because hairtail is not easy to survive, so it is frozen and stored for transportation. There are few intermediate links in hairtail transportation. Because hairtail is frozen, it is sent directly from the port to all places, and there are not many intermediate links to increase transportation costs.