Lin Yan's fingertips can touch the remaining warmth of the deceased - those "echoes" condensed in the relics are warm golden concern, gray-blue guilt, or determination like red-hot iron filings. For ten years, she collected these emotions like sorting specimens, but she could not avoid her sister Lin Tang's "suicide" until the blackened music box crashed into her sight.
The moment he touched the knob, red-hot light particles burned through his fingertips, reflecting Lin Tang's burned wrist and the words "Don't touch, it will be hot" that contained the temperature. The mysterious man Lu Ze arrives one after another, bringing scarves from the car accident, dried maple leaves, and pens for repair. In the ice-like echo, the sister's unfinished "Lu Ze, you can't..." And the smell of disinfectant on Lu Ze's sleeves weave a web that points to the truth.
The ceramic ornaments of old policeman Chen Mo hide the echo of silence, Su Wan's deaf left ear can catch the noise, and the shadow of Stardust Company gradually appears. When the fragments were put together, Lin Yan was shocked to realize: the back of her sister throwing herself at the flames was to block the alcohol lamp she had knocked down; the words "I don't blame you" across the door panel concealed the fear of waking her up; even the smell of iodine that Lu Ze always carried came from the traces of rubbing the medicine while hiding it for Lin Tang.
She had read about the deepest feelings in the world, but it took her ten years to understand how much tenderness that penetrated time was hidden in Lin Tang's last words of silence. It turns out that the misunderstood indifference is all candy wrapped in thorns. When the wind passed by the window sill, she finally caught it - the echo that she had not dared to touch ten years ago was falling gently into her heart along the burn marks on her palms.
