Xu Wenbin brings two cans of aged tea treasured by his grandfather to attend Zheng Jianmin's birthday banquet, unexpectedly uncovering the affection between the two families' elders from many years ago. Wu Lixin takes advantage of a cooperative project to strive for the Zheng family's recognition, while Xu Wenbin points out the risks of the proposal based on professional judgment. From this, Zheng Jianmin reflects on the practice of measuring others by external conditions, and ultimately respects his daughter Zheng Xiaoping's emotional choice. A cup of aged tea witnesses past kindness, and also lets everyone understand the preciousness of honesty and sincerity.