Dora

Dora is a feature to the game, where possession of specific tiles instantly grants the hand 1 han per tile.

The dead wall

Every mahjong hand session has 14 tiles set aside from the regular tile draw and discard processes. These tiles are designated as the dead wall, and they are considered to be out of play. Among the dead wall, one tile is flipped and revealed for everyone. This tile is assigned as the "dora indicator". Tiles marked as dora are indicated as the next tile in the sequence. For example, if the dora indicator shows , then the dora tile is .