From their first encounter at the Hundred Days Banquet to every moment they grew up together, Su Nian and Lu Xingci, childhood sweethearts from a well-connected family, have walked hand in hand over the course of 25 years. Su Nianruan, who comes from a teacher family, is cute and delicate, and eventually becomes a picture book writer; Lu Xingci, who comes from an entrepreneur family, looks cold on the outside but is actually gentle at heart, and grows up to be an artificial intelligence engineer. In each other's company, they went from ignorance and dependence to deep love, and composed a sweet love song that spanned the years.
