Starting from His Disappearance [Suspense]

Copywriting: "Would a person who follows the rules and do things like two points and one line suddenly change his habits?" The person who asked this question was Xia Yang, my ex, a passionate and unrestrained woman. I don't want to talk more about Xia Yang. When she scolded me that my mind was smaller than the eye of a needle and dumped me so cruelly, she definitely didn't expect that she would ask for help from me. My mind is indeed smaller than the eye of a needle, but considering the high commission fee, I will be more open-minded for the time being. "Can you tell me in detail, Sister Xia Yang?" The person who answered was Xiang Siyan, my assistant and a good-tempered little brother. Oh, by the way, he is also Xia Yang's ex. Compared to me, he doesn't care so much about him being the one being dumped. Xia Yang's current boyfriend disappeared just a week before they were to get engaged. On Friday, the 13th of last month, the man carried his computer bag and held an old thermos filled with wolfberry berries. He got off work at 6:30 on time, got on the second subway car at 6:42 on time, and exited the No. 2 Subway station at 7:03 on time. The last time surveillance captured him, he kept an elegant smile and walked into a five-story old house that was to be demolished. Then no one saw him again. Reading guide: *The copy is in first person, and the text is in third person. *Two male protagonists (Sikong Anchen, Xiang Siyan), no emotional scenes. Friendly guest star, Xia Yang. *Suspense and reasoning articles, short stories, try to be as logical as possible, but there will inevitably be loopholes, please point them out. Purpose: Revere life, cherish life