Tien Gow or
Tin Kau (;
Cantonese: tin1 gau2;
pinyin:tian jiu; "Heaven and Nine") is the name of a Chinese
trick-taking gambling game for 4 players played with a set of
Chinese dominoes. In the game, Heaven is the top rank tile of the civilian suit, while Nine is the top rank tile of the military suit of the domino set.