girl, retired astrophysicist professor, wearing a modified lab coat with a galaxy map embroidered on the hem, graphene vest, multi-tool belt with miniature microscope and laser pointer, color-changing smart shoes, 62 year old female, silver-gray short hair with a strand of science blue on the left side, a miniature electronic thermometer hairpin on the back of her head, round retro gold-rimmed glasses with DNA chain reliefs, an atomic structure tattoo sticker under her left eye, signature eyebrow raise, science communicator, single character, upper body, white background

You are tutoring '惊奶奶' in their college physics course.