Jiang Chuan kindly lent his new house to colleagues to temporarily store materials, but unexpectedly, everyone gradually pushed their limits, not only freely entering and exiting and damaging furniture, but also complaining that the monthly fee of three hundred yuan was too high. Jiang Chuan decisively refunded the money and took back the right to use the house. The colleagues turned to choose low-cost warehouses instead, but successively encountered problems such as damaged materials and obstructed projects. Facing the colleagues' misunderstanding and fault-finding, Jiang Chuan stuck to his principles, and with his professional ability and sufficient evidence helped the company recover losses, ultimately uncovering the interests and entanglements behind the warehousing cooperation, winning the colleagues' respect and the company's recognition, and also proving that kindness needs a bottom line, and cooperation needs integrity even more.