I. A Client's Bedroom Reminded Me of "Nighttime Noise" Last winter, a cross-border e-commerce boss, Mr. Liu (pseudonym), asked me to look at his newly bought marital home. The place was well-appointed. South-facing, airy, bright. Half a year of renovation. "Nordic minimalist." But the bedroom had a problem. He told me: "Wen Laoshi, I've been here two months. I wake up at 2 AM sharp every night. Once awake, my mind runs — did today's shipment go out? Why isn't that Amazon list