Of Dragons, Feasts and Murders (Dominion of the Fallen #3.5) by Aliette de Bodard 16, Jul

Thuan brings his husband Asmodeus home for the Lunar New Year expecting some awkward family reunions and a great deal of feasting. Instead, to Asmodeus’ great interest and delight, they come across a murdered corpse. Thuan is significantly less enthusiastic about this development than his husband but agrees to be pulled into the murder investigation in order to protect his family against a coup.