Also they have participated in other activities as Leonese Language Day , Mother Language Day , and have collaborated in publcations like `` Cuentos del Sil '' , where writers from the shire written a collective book with stories in Leonese language . Also they have participated in other activities as Leonese Language Day , Mother Language Day , and have collaborated in publications like `` Cuentos del Sil '' , where writers from the shire written a collective book with stories in Leonese language .