Yan Guiyao, an old doll restorer, discovered that the damaged rabbit doll would vibrate with the thoughts of its little owner. He took the girl Lin Xiaoman to follow the vibration frequency to carry out a "treasure hunt teaching" in the park, and used his quilted hands to teach her to listen to the echo of longing. In the end, he recovered not only the doll, but also the forgotten secret words of childlike innocence.
