Send Li Zhun base to credit switching over to attach oneself to that?

给李准基寄信用改寄到那？

Is asking the material (letter of recommendation, financial resources certificate etc.) applying for required various please attach oneself to being a li to still attach oneself to school?

请问申请所需的各种材料(推荐信、财力证明等等)是寄到系里还是寄到学校呢？