Regardless of whether Fan Xian was scared or not, the matter had already happened. During these years, perhaps the Emperor did not want to completely severe his connection to the son he liked the most. Or, perhaps the Emperor only knew that Fan Xian had entered the Palace but did not know the chest was in Fan Xian's hands and had remained silent. It seemed that this kind of tacit understanding of not asking further demonstrated a father's tolerance of his favorite son.
Furthermore, Fan Xian had indeed been very hard on himself. Even when he faced a desperate situation, he rarely used the weapon of mass destruction. The only time he had used it had been in a dark and quiet primal forest. Additionally, the key was still in the secret compartment in Hanguang Palace. This made the Emperor guess incorrectly about some things.
