Mạng lưới 24 chân dung phong cách tối giản đen trắng

A black and white minimalist hand-drawn character portrait grid, strictly 6 rows by 4 columns totaling 24 portraits evenly arranged on a white background. Key structure: Each portrait is enclosed in a square grid where the square's four edges form the face's outline boundary. Faces are tightly aligned with the square edges without additional margins. Style features: Pure black and white line art with no filled color blocks, no shading, no gradients. Hand-drawn texture with slightly irregular lines, playful and quirky editorial illustration style. Minimal facial features: dot eyes, small circle eyes, short line eyebrows, dot nose, straight mouth, small smile, sad mouth, sleepy eyes, surprised O-shaped mouth, expressionless. Hair outlined with lines: wavy bangs, curly hair, middle part, short hair, side bangs, spiral curls, striped hair, scallop bangs. Some characters have round glasses, square glasses, beards, freckles, closed eyes, X-shaped eyes. Diverse expressions: happy, sad, confused, sleepy, surprised, expressionless. Overall style resembles a hand-drawn character encyclopedia, geometric, restrained, playful yet not loose, flat, high contrast, no color, no background decorations, no realistic details.