16:9 horizontal composition/canvas, warm antique cream paper background, central irregular ink wash / mực loang window containing the illustration, centered about 65% of canvas, cream paper margins, Vietnamese Lý dynasty historical ink-wash storytelling style, no text, no watermark, no modern objects. Context: Kinh đô Thăng Long thời Lý, cung đình, tuổi trẻ và thân thế Lý Thường Kiệt. Scene subject: cinematic historical tableau of Đại Việt court and military strategy, Lý dynasty costumes, solemn atmosphere. Visual beat: Ông sớm vào cung phục vụ triều đình. Production scene image for approved story video. Keep exact locked mực loang kể chuyện layout: 16:9 horizontal, warm antique cream paper, central irregular ink-wash window about 65 percent canvas with clear filled composition, no huge blank space, no pure white, no full bleed, no text, no watermark. Historically grounded Đại Việt Lý dynasty 11th century, Vietnamese faces/costumes; Song troops distinct only if present.