大山鳴動して鼠一匹 たいざんめいどうしてねずみいっぴき much ado about nothing; The mountains have brought forth a mouse (Aesop) exp Advanced ➥
山越し やまごし wind blowing down, coming over a mountain n vs immediately after one's draw n mahj winning off a discarded tile from the player to one's right or across the table on the turn after letting one's winning tile go by from the player to one's left n mahj Advanced ➥