The bell was finally cast in 771 A.D., during the reign of Gyeongdeok's son, King Hyegong.

It is unique among Korean bronze bells because of the presence of delicate designs and the title text, written in an elegant literary language.

There are also reliefs of lotus flowers, grass, and a pair of two apsaras (heavenly maidens).

The striking point of the bell (dangjwa) is also in the shape of a lotus and sits between two of the apsara reliefs.

The inscriptions on the bell (the title text), over a thousand Hanja, are a fine example of Korean calligraphy and carving.

The king that had commissioned the bell died thereafter and his young son took over the project with the help of the queen.