The Basin (鉢 Hachi?) is an unknown flowerpot housed in the Main Temple Annex that serves as an important item to Rien.
Plot
Hōrai Arc
After Hōrai turns into a battlefield, Rien orders Gui Fa to quickly head towards the Main Temple Annex to protect the Basin. After arriving, Gui Fa found it hard to believe that the Basin was his main objective all along.