Bamboo / 索子 / Suò Zǐ

Characters / 万子 / Wàn Zǐ

Mahjong Tile Sizes

Size	Height (mm)	Length (mm)	Width (mm)
Large	39	30	23
Standard (A1)	37	28	22
Standard (A2)	35	26	20
Standard (A3)	31	23	19
Mini	20	14	11
American	30	21/22	13/14
Japanese	25	18	16

Large
Generally for those who has bigger hands or prefers to play larger tile sizes.
Tiles are bigger than standard sizes and are a handful.

Standard (A1)
This is the standard tile size for playing Mahjong.
Most popular amongst Asians.

Standard (A2)
Slightly smaller than standard size A1.
Generally more popular with Asian females.

Standard (A3)
Generally for kids

Mini
Good for travelling.

American
American tiles are smaller and thinner.
Tiles are played on racks similar to the game Scrabble. 

Japanese
Japanese tiles are thicker and more squarish.
Tiles are not easily toppled like the standard tiles.

Concealed Kong / 暗杠 / Àn Gàng

An event that the Player completes four of a kind.
- All four tiles must be self drawn
- Payout is instant

Kong / 杠 / Gàng

An event that the Player completes four of a kind
- Payout is instant

Opening Hand / 门胡 / Mén Hú

Doubles: Limit

Pay out: Limit + Self drawn

Difficulty Level: Extremely Difficult

Winning Hand:

门胡 refers to winning hand where a player wins the round on the first drawn tile.
- The winning hand cannot be won by Player1(dealer)
- The winning hand can be won by Player2/3/4
- The winning hand must be the first drawn tile
- The winning hand must form 4 sets of melds and a pair of eyes.
- The winning hand does not need to have any Doubles.

See also:

Heavenly Hand / 天胡 / Tiān Hú

Earthly Hand / 地胡 / Dì Hú
Humanly Hand /人胡 / Rén Hú

Exposed Kong / 明杠 / Mìng Gàng

An event that the Player completes four of a kind by either
(i) having 3 of a kind in his concealed hand and forming 4 of a kind with a discarded tile
(ii) having 3 of a kind in his exposed hand and forming 4 of a kind with a self-drawn tile
- Payout is instant