A divorce agreement completely shattered Gu Zheng's self-righteous illusion of a happy marriage.
From the beginning, what pushed Gu Zheng into marriage was his responsibility to Lin Yunshu. It was also Gu Zheng's need to get married, and then Lin Yunshu happened to appear.
But it took Lin Yunshu five and a half years to save up enough disappointment and make up his mind to bring his and Gu Zheng's story to an end.
Concept: Expectation brings a vicious cycle of disappointment.