Create a restrained contemporary drama in the old reading room shown in Image 3. Preserve Character A from Image 1: adult woman, cropped dark hair, brown cardigan, silver ring. Preserve Character B from Image 2: adult man, wavy hair, navy coat, canvas satchel. Keep both identities and wardrobe unchanged.

0–5s: medium close-up on A at a long table; she finishes a handwritten letter, folds it once, and hears the distant door. 5–10s: over A's shoulder, B enters at the far end and pauses without seeing her; A covers the letter with a library book, her hand hesitating on the cover. 10–15s: close two-plane composition—B turns toward the aisle, A looks up, their eyes almost align, then A quietly slides the unopened letter into the book and stands.

Use winter window light, quiet dust, minimal camera drift, natural breathing and micro-expressions. Sound intent: pen scratch, page fold, door hinge, radiator tick; no generated dialogue. Avoid melodramatic crying, age drift, hand errors, changing letter position, extra patrons, readable private letter text, or watermark.