Yanfei has average height. She has a pale complexion, bright teal-green eyes with ovoid pupils, and salmon-colored hair that goes past her shoulders and fades to a pale peach at the tips. The hair around the sides of her head is chopped short at ear length in a fringe, revealing a pair of cream colored antlers as a result of her xiezhi heritage. In addition to this, the sides of her chest, ankles, and the backs of her hands have white diamond-shaped markings that resemble scales.