A black-and-white minimalist hand-drawn portrait grid, strictly 6 rows by 4 columns, totaling 24 heads, evenly arranged on a white background. Key structure: each portrait is enclosed within a square grid cell, and the four sides of the square themselves serve as the facial contour boundaries. The face fits tightly against all four sides of the square, with no extra margins. Style features: pure black-and-white line illustration, no filled color blocks, no shading, no gradients. Hand-drawn texture, with slightly irregular lines, in a naive and quirky editorial illustration style. Minimalist facial features: dot eyes, small circle eyes, short line eyebrows, small dot noses, straight line mouths, small smiles, small sad mouths, sleepy eyes, surprised O-shaped mouths, expressionless faces. Hairstyles are outlined with lines: wavy bangs, curly flowing hair, center-parted curtain hair, short flat-top lines, side-swept bangs, spiral curls, striped hair, scalloped bangs. Some figures have round glasses, square glasses, beards, freckles, closed eyes, or X-shaped eyes. Various expressions: happy, sad, confused, sleepy, surprised, expressionless. The overall style resembles a hand-drawn character catalog—geometric, restrained, naive but not loose, flat, high contrast, no color, no background decoration, no realistic details.
