The side cards hung in mahjong refer to the cards needed when playing Hu cards.

1, 89 cakes, Hu 7 cakes, for the edge.

2. The cards in the middle of Hu's first hand are three cakes and five cakes. When four cakes eat Hu, because four cakes are stuck in the middle, they are called cards.

3, hanging, commonly known as monotonous, hanging the hope of Hu cards on one piece, for hanging, such as: thirteen cards are three cakes, four, five, six, seven, eight, two, three, forty thousand and fourteen cakes, and at this time there are only Hu fourteen cakes, which is called hanging.