When I was 32 years old, my life was torn apart—on the screen of my mobile phone and in my monthly balance of 1,621 yuan. I am a tired teacher, calculating carefully between the unit price of drawing paper and the tuition fees for students, until a 20 million novel remuneration silently arrived in my account. I choose to swallow this secret like a diamond that must be digested alone. From then on, I lived a double life: I was still Teacher Pu Sulin during the day, and I was "Xilin", a wealthy man who lives in hiding at night. I calculated every "reasonable upgrade" carefully, used loans as a disguise, and built a fortress where no one knew. This is not a story about squandering, but how an ordinary person uses huge secrets to reconstruct his life and redeem his options. Finally, at the end of the dual trajectory, he finds something more precious than wealth - the confidence to sleep peacefully no matter where he is, and the friendly light when he returns.