Nineteen-year-old Lu Sheng believes that in the equation of love, the liking of both parties is the only variable factor.
But the truth of life broke down his innocence bit by bit, and cruelly told him when he was twenty-three that liking was just an insignificant factor in the equation.
He used clumsy efforts to contend with the truth of life, and when he was nearly 30 years old, he met the person he loved again. They each shined, and liking became the only variable in their love.
Intention: Hope, we all stand in the light