Gofun is powdered shells such as oysters.

Yellowish white like gofun is called Gofun-iro.

In the old days, the white lead pigment made from lead was called gofun, but after the toxicity of lead became known, the shell powder came to be called gofun.

The word "hu" originally referred to the primitive peoples of northern and western China in ancient times, but it has come to mean foreigners and foreigners.

The white powder that came from China was called gofun, and kokyu and sesame also have the same origin.