The Chen family elder left a special will. Su Qing from the second branch received the old house and a locked iron box, with instructions not to open it within five years. Surrounding relatives and friends were puzzled, and real life encountered frequent setbacks. Su Qing always kept her promise, facing criticism and difficulties head-on. Having endured five long years, the truth behind the iron box is slowly revealed. This is not only the handover of a family business, but also a trial of loyalty and true intention. Wealth and vanity will eventually dissipate; holding onto conscience and loyalty is the family's most precious heritage.