Phác Thảo Than Cùi Tay Ảo Giác Quang Học

An unsettling and surreal charcoal sketch in high-contrast black and white, depicting an optical illusion where a coiled, sleeping human figure is inextricably merged with a massive clenched fist. The bald human head with closed eyes and curled fetal-like body form the knuckles and thumb contours of the fist. Dense cross-hatching, smudging, and burnishing on textured paper render sculptural shading and fine tactile texture. The background is a simple, blurred [charcoal wash], isolating the hybrid form as the central focus.