At this point in the story, Shi had received a carrier pigeon message—a letter his father left behind years ago.
Only now did Ning Xiao learn that his father was Ning Yuandao, the Assistant Minister of the Ministry of Revenue who was implicated and his whole family convicted in the Xuanwu major case twenty years ago.
The mysterious person claimed in the letter that he was the one who had saved Ning Xiao from the Execution Platform, so that when Ning Xiao grew up, he could uncover the truth behind his family's wrongful conviction.
Moreover, the mysterious person also told him that his parents had a chance to escape, but for the sake of their son, still in swaddling clothes, they sacrificed themselves, leaving behind a glimmer of hope for him.
After many years, Ning Xiao verified the mysterious person's claims and was certain they were true, which led him to decide to leave Dawu Mountain to find the truth of past events.
