Leonese Language Day ( DÃ a de la Llingua LlÃ onesa ) is a cellebration for promoting the Leonese language developed in the city of LliÃ n , province of LliÃ n , Spain . Leonese Language Day ( DÃ a de la Llingua LlÃ onesa ) is a celebration for promoting the Leonese language developed in the city of LliÃ n , province of LliÃ n , Spain .