Xiaoman picked up a rusty iron boy in an abandoned playground. He was missing a heart and had a line of words engraved on his chest: "We need a singing wind here."
In order to wake him up, Xiaoman started a wonderful journey to collect the "five kinds of wind" - the wind from the swing, the wind from the roof, the wind from the river, the wind from the wheat field, and the wind from home.
When the last gust of wind filled his chest, the tin boy sang a long-lost song. In that song, Xiaoman's father's lost childhood of thirty years is hidden.
It turns out that in every adult's heart, there lives a tin child who forgets to be loved.
Purpose: In the heart of every adult, there lives a childhood self that has been forgotten by time; and every child has the ability to reawaken that "Tin Man" with love and kindness.