In the case of incense burners, incense containers, and tea bowls, it refers to the convexity of the body, and in the case of tea bowls, it refers to the style of the sides of the bowls’ pedestals. In the case of tea bowls, it refers to the style of the side of the stand. Both of these names refer to the shape of the stand as if it were a joint of bamboo. Bamboo joints on the side of the pedestal is one of the 12 Hakuan works, which is considered to be one of the most famous tea bowls.
