After six years in the crypto world, I never expected to experience social death at the entrance of a milk tea shop.

I had just ordered a mango pomelo sago and was waiting for it to be made, so I decided to transfer some money to my wife for clothes—when suddenly, my phone popped up with "Abnormal transaction, temporarily frozen." At that moment, nothing could save my mood, and I was completely stunned at the cashier.

I always preach "safety first" as an analyst, yet I ended up tripping myself up. Let me break this down—these are all hard-earned lessons I learned with real money.

Here's what happened: I use this card exclusively for legitimate transactions—salary, consulting income, all of it goes through here, clean as a new hard drive. The only "unexpected operation" happened ten days ago—I received a transfer labeled "technical collaboration fee." The sender was a project partner I’d worked with before. They said they’d send part of the deposit first, so I didn’t think much of it and just confirmed.

And now, here I am. After I got through to customer service, I found out: the source account for that money had recently been involved in intensive cross-platform fund movements, and the system flagged it as a "high-risk associated account." In other words, my card got "implicated." Even though I did nothing wrong, I still have to submit a bunch of documents to get it unfrozen.

This incident really made me realize—the crypto industry is full of "invisible pitfalls," especially for newbies. Don’t think "I haven’t done anything wrong, so I’m safe." The system’s risk assessment standards are way stricter than you imagine:

**First rule: Never write random remarks in transfer notes.**

A lot of people receive money with notes like "investment return" or "contract dividend" and just accept it—this is basically handing risk control systems a clue. The correct way is: communicate with the sender in advance and use neutral descriptions like "technical service fee," "consulting fee," or "design fee."