It must now be decided which side of the Wall should be opened and which player will deal tiles to players. The method is quite elaborate (and it is used to defeat the possibility of any player cheating).
The procedure is for the East Wind player to throw two dice. The number is noted. The purpose of this is to identify the player who will deal tiles to the other players and which side of the Wall will be opened. To do this you need to start counting the number that has been thrown around the sides of the Wall. Counting always begins from the East Wind player and the order of players is East Wind/South Wind/West Wind/North Wind. The Walls are numbered (anti-clockwise) as follows:
The East Wind player's side of the Wall is: 5 or 9.
The South Wind player's side of the Wall is: 2, 6 or 10.
The West Wind player's side of the Wall is: 3, 7 or 11.
The North Wind player's side of the Wall is: 4, 8 or 12.
If the number thrown by the East Wind player is "12". If you start counting from the East Wind player and continue around - you will find that the North Wind player will open the Wall that he or she is facing in order to deal tiles to the other players.