At 10:30 on Friday night, my phone suddenly wouldn't stop vibrating. When I checked, an old buddy in the group had sent a long voice message, his voice trembling: "Bro, it's over... The money for my kid's overseas studies, all gone. My wife just followed the steps I taught her, but..."

I immediately asked the key question: "Did you take a photo of the mnemonic phrase? Or store it somewhere?" There was a long silence on the other end, then a deep sigh. Turns out, this guy was on a business trip last month and, worried his wife wouldn't know how to use the wallet, he took a picture of the 12 words and thoughtfully circled "Enter in this order" in red pen before sending it via WeChat. He even recorded a short video showing her step by step. As a result, when his wife made a transfer in the middle of the night, 3 million was transferred away in several transactions. When they contacted the platform's customer service, all they got was, "These were your own operations, there's nothing we can do."

I've been in this space for six years, and I've seen this kind of thing way too often. Everyone stares at the price charts until their eyes are red, but when it comes to the most basic anti-theft measures? Many people don't take it seriously at all. Today, I'm going to share three rules for survival, which are more useful than any market analysis—newcomers especially need to remember these.

**Rule 1: Your mnemonic phrase must be completely isolated from the internet; once it touches an electronic device, it's as good as giving your money away**

The mnemonic phrase is the universal key to your assets. Imagine locking 3 million in cash in a safe, then posting a photo of the key on your social media—it sounds absurd, right? But that's exactly what many people do. Some people store it in their phone's notes, and after losing their phone, 2.6 million vanished in a day; some think cloud notes are safe, but once their account gets hacked, their assets are instantly wiped out. Industry statistics show that, among cases of stolen crypto assets last year, over 70% happened because the mnemonic phrase was stored electronically—whether it's a phone, computer, or the cloud, all these "convenient" places...