Teenage love.
The innocent sound of autumn was the purest stream in Huaiying's heart when he was young.
The gentle sound of autumn, as gentle as jade, is the little warmth that young Huaiying misses most in his heart.
The lively and smart autumn sounds, the quiet and taciturn Huaiying; the quiet and gentle autumn sounds, the majestic and serious Huaiying; the clever and charming autumn sounds, the affectionate Huaiying.
It's called a match made in heaven.