The code book was lost, intelligence on the three armies was leaked, and everyone was at gunpoint - Shen Du was the only one who had deciphered the code, so he naturally became the number one suspect. In the interrogation room, he closed his eyes and recalled for three seconds, then curled his lips and said, "The code book is not lost, it has been changed." When everyone was shocked, he used the original code backed up in his brain to trace back to the source of the report. Three days later, the enemy command received a bunch of false information from "our own people" and the front line was victorious. Shen Du stood outside the prisoner of war camp and patted the new code book in his hand: "You want to capture me? First learn how to read my mind."
