subject description: 20-year-old wu song documentary photography, retaining the youthful square jaw foundation, sword-shaped eyebrows with adolescent disarray, phoenix eyes maintaining sharp gaze without wrinkles, jawline stubble mixed with golden vellus hair. body type shows lean muscularity of young warrior, shoulders not fully developed, waist retaining adolescent flexibility, "loyalty" arm tattoo in three-month-old fresh state. authentic details: forehead glistening with morning sweat, slight acne around nostrils, hemp boots revealing internal straw structure, sabre handle patina showing new weapon usage. environmental elements: morning fog forming irregular condensation on pine needles, moss growth following real shaded patterns, fresh claw wound with grass debris. photography specs: hasselblad x2d natural colour solution, f/5.6 aperture depth, fujifilm pro400h film simulation, skin retaining 15% adolescent acne marks and 30% sunburn demarcation, linen fabric texture from actual ramie scans, metal sabre with three-month oxidation rendering, iris pigmentation transitions characteristic of adolescence.