(mahjong) all simples: a 役 (yaku, “hand”) that has 2-8 of any of the three main suits, lacking any 么九牌 (yaochūpai, “terminal and honour tiles”), worth 1 翻 (han, “double”)

to blend, mix, merge / to confuse

sound of a crash

天が下: the whole world, under heaven; the people of the country or nation; the imperial court; the administration, the government; all of Japan