Sequoia, commonly known as "Hongsan" and "Guasan", is an important economic fish in the South China Sea. Fish is rich and has high edible value. It can be chilled, pickled and dried, and tastes a bit like hairtail. Sequoias are divided into ordinary sequoias and golden sequoias. Golden sequoias have an obvious golden thread, which is generally twice as expensive as ordinary sequoias.

hairtail is no stranger to everyone, but it is fierce and feeds on shrimps and squid. It is mainly distributed in the western Pacific Ocean and Indian Ocean, and distributed in the Yellow Sea, East China Sea, Bohai Sea and South China Sea in China. It is also known as the four major seafood in China with large yellow croaker, small yellow croaker and squid.