What does it mean to declare porcelain for two years?

The second year of Xuanhe, porcelain bottom, refers to a kind of porcelain with the words "the second year of Xuanhe" engraved on its bottom. Xuanhe Year is a year number in the Northern Song Dynasty, namely119 to 1 125. Therefore, the basic shape of this kind of porcelain is the second year of Xuanhe, which means that this kind of porcelain was made during Xuanhe.

Porcelain is a very important cultural work of art in the history of China. Porcelain in Xuanhe for two years has become an important object for collectors and museums because of its age, exquisite production and good preservation. A book with a bottom shape and two-year-old porcelain are usually considered as a rare cultural relic with high collection value. At the same time, this kind of porcelain is also one of the important material evidences to study the historical and cultural background of porcelain making in Song Dynasty.