理性群

No fundraising deck. No office photo shoot. No “valuation doubled in months” story. Just a rented office, two side-by-side monitors, and a whiteboard covered with formulas and parameters. Every day, Pei Yanzhou handled private messages, group chats, product feedback, and his own postmortems. He broke down every pitfall he had stepped into and turned them into articles, short clips, charts, and tool tips. The content was not flashy. It was useful. One day, someone who had once laughed at him showed up too. That guy used to say in the office pantry, “You’re the kind of person who reads two books and thinks he can beat the market.” Now he was standing in the doorway of Pei’s office, looking awkward, asking whether they could talk privately.