It is explained that it was made by a craftsman named "Aoki" in a town called "Arita Town" in "Hizen", Japan

Hizen is the name of the old country in the northwest of Kyushu, Japan. . Today's Saga and most of Nagasaki Prefecture. Originally, Hizen and Higo were one country, called the "Fire Country", and later they were divided into two countries: Hizen and Higo. In "Fudoki", fire is changed to fat (the Japanese pronunciation of these two words is the same), so they are called fat before and fat after.

Arita Town, at the junction of Saga Prefecture and Nagasaki Prefecture, is rich in "Arita ware" porcelain and is a sister city to Jingdezhen. (Both are rich in fine ceramics)

"Qingmu" probably refers to "Qingmu Longshan", a famous artist and master of ceramics