In a small southern town in the late 1990s, Shen Wanxing, a girl preparing for the exam, met Jiang Yi, a young man who could play an old guitar. Under the old orange tree at the entrance of the alley, the orange lights reflected the youthful confession; beside the river embankment, the sound of guitars accompanied the gentle chorus; the sweetness of the orange candies hides the heartbeat of ignorance. They got close to each other amidst the chirping of cicadas and the evening breeze, accompanied each other amidst academic pressure, family worries and confusion of growth, and turned the small test of youth into a mellow love. This is a story about encounter and companionship, courage and growth. The wind kissed the smell of oranges that night, and the thoughts hidden in the orange petals and the promises under the moonlight eventually became the warmest mark in life.