Return to the building and approach the shredder in the hall (right side of the desk; zoom). Insert the mask and after a while open the lid and take the cut mask fragments.

因到屋子里，到桌子旁边的碎纸机边，把面具放进去，得到面具碎片。

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There was a box with a lid on the desk.

桌上有一只附有盖子的盒子。

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There was a box with a lid on the desk.

桌上有一只附有盖子的盒子。

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