When does the protagonist not have to play the fool?

Three years. According to the public information, in the novel Shi Tian's Seeking Dragons, the protagonist is not a fool for three years after he is 18 years old. "Shi Tian's Strategy of Searching for Dragons" is about a Shi Tian man who left his hometown and wandered around in order to trace the dragon. Where there is news of the dragon, he will rush to the story for the first time.