Wang Kexi's reminder, the coincidence of her last name and Wang Bingyi, and the Luban ruler records in his father's notes all enveloped Ding Ziran like a mist. He forced himself to calm down and repair the blue and white plate, but he accidentally discovered that the erroneous gold mark actually formed an arrow under the side light, pointing to the old rosewood tool box left by his father.
Ding Ziran pried open the hidden groove at the bottom of the tool box. There was no letter or key inside, only half a dry and black severed finger, the cut was neat, and there was a thimble engraved with the word "gui" on the finger - exactly the same as the mark on Luban's ruler. At this moment, the phone rang again, and a text message came from an unknown number: "Master Ding, can you still forget the pain of a broken finger? Mr. Wang is waiting for you."
One is a goldsmith who is in debt and sticks to his craft; the other is a secretive young girl who is burdened with secrets; one is entangled with the cause of his father's death, huge debts, and the secrets of Lu Ban Ruler; the other is tied up by Broken Ruler and hides unspeakable secrets. Ding Ziran held the half-severed finger and finally understood that his father's death was no accident. Wang Bingyi's covetousness, Wang Kexi's reminder, and the break of Lu Ban's ruler all revolved around a secret that had been sealed for ten years. He must rely on his metalworking skills and keen intuition, follow the clues of Lu Ban's ruler and the severed finger, to find out the truth about his father's death, uncover this conspiracy that spans ten years, and find a way out for himself in a desperate situation.
