His name is Xu Yinuo, and her name is He Qianjin. The two of them made a huge promise. Childhood sweethearts, childhood sweethearts. He originally thought that he would live forever like this, but unexpectedly, he had other feelings in his heart. Her name is Zhongqing, a fateful acquaintance, closely linked to the two of them. He was worried about gain and loss, fearful in his heart, and years of secret obstruction could not stop the love deep in his heart that he could not let go of. It turns out that a promise is worth more than a thousand pieces of gold, and it is far less than his soft spot. A promise of a thousand pieces of gold finally turned into love at first sight and a lifetime promise. Growth is a slow, painful and profound process, and youth is a road in life that you want to escape but must pass through. When everything has changed, what changes have happened to the three of them... What changes is time, but what remains unchanged is the past.