A black and white minimalist hand-drawn portrait grid, strictly 6 rows by 4 colu…

A black and white minimalist hand-drawn portrait grid, strictly 6 rows by 4 columns, totaling 24 portraits, evenly arranged on a white background. Key structure: each portrait is framed by a square grid box, where the four sides of the square are themselves the contour boundaries of the facial features. The face is tightly against the four sides of the square, with no extra margins. Style characteristics: pure black and white line illustration, no filled color blocks, no shadows, no gradients. Hand-drawn texture, lines slightly irregular, naive and quirky editorial illustration style. Minimalist facial features: dot eyes, small circle eyes, short line eyebrows, small dot nose, straight line mouth, small smile, small sad mouth, sleepy eyes, surprised O-shaped mouth, expressionless. Hairstyles outlined with lines: wavy bangs, curly line hair, middle-part curtain bangs, buzz cut short lines, side-swept bangs, spiral curl hair, striped hair, scallop-shaped bangs. Some portraits have round glasses, square glasses, beards, freckles, closed eyes, X-shaped eyes. Varied expressions: happy, sad, confused, sleepy, surprised, expressionless. Overall style close to a hand-drawn character guide, geometric, restrained, naive but not loose, flat, high contrast, no color, no background decoration, no realistic details.