For decoration needs with a limited budget, we choose a cost-effective plan of basic wall stickers + universal space wallpaper — the main wall is backed by affordable universal space wallpaper, and local basic wall stickers (geometric line style) are used for decoration to fill the gaps. At the same time, the color extension of the wallpaper is used to optimize the space proportion. The total cost of this plan is only 1/3 of high-end wallpaper, but through material matching and color coordination, the originally simple rental house/old house wall looks neat and textured, realizing “low cost and high effect” space renewal.