In the year 5711 of the New Gregorian calendar, Office 5 of the Security Building received three unsolicited messages from the Space Prison: – My dear, I’m watching you. – Relax, you’re just on the prison’s big broadcast screen. – I’m suddenly really looking forward to reuniting with you. Would you greet me with a smile, or shoot me right in the head? Chu Si sat behind a spacious desk, his face unchanged after reading the messages, and replied, “If I remember correctly, your sentence is the duration of the planet’s lifespan. So unfortunately, there will be no such day.” Unless the world ends and the planet explodes. But then two years later… the planet really did explode. Chu Si: “…”