墙纸

墙纸	qiáng zhǐ	wallpaper
墙	qiáng	variant of 墙
墙	qiáng	wall (CL:面,堵) / (slang) to block (a website) (usu. in the passive: 被墙)
纸	zhǐ	variant of 纸
纸	zhǐ	paper (CL:张,沓) / classifier for documents, letters etc