Why a small site called "Yudi" exists at all

Let me start with my own motive. In my first couple of years in crypto, I lost enough money to buy a lot of lessons. Not from a scam, not from bad luck — just plainly not understanding what "risk" was. I thought figuring out what to buy was enough, and nobody ever warned me that the bigger questions are how much to put in, what to do when you're down, and when to admit you're wrong. By the time I'd worked those out, a big chunk of the account was already gone.

Later I noticed something. There's more content teaching people "how to win" than anyone could ever read: this coin's going up, that project's about to take off, copy my trades. But content teaching people "how to lose less, how to guard the stake" is painfully scarce. That's exactly the lesson beginners are missing most. Yudi is trying to fill it.

This site does only three things

One, explain risk and money management in plain words. Not copying definitions and piling up jargon — taking something like "lose 50% and you need 100% to break even," the kind of thing that tightens your chest the moment you do the math, and breaking it down for you.

Two, give you a few calculators you can run yourself. The recovery calculator, position calculator and risk-reward tool — all run in the browser, no network, no uploads, pure math. I'd rather you didn't take my word for it; pull the numbers yourself, it beats anyone lecturing you.

Three, handle the unavoidable matter of opening an exchange account honestly. Once you've learned risk control, sooner or later you'll trade on a real platform; I'll tell you which two I use myself and that an invite code at sign-up saves on fees — and that's all.

What this site flatly won't do

Let me get the blunt part out of the way, so you don't expect the wrong thing:

• No calls. You won't see "buy now" or "target price X" here. I don't know whether it goes up or down tomorrow, and anyone who says they do is someone to keep your distance from.
• No coin tips. I won't tell you which coin to buy or which project is about to fly. What to buy is your decision; I only help you get clear on "the most to put in, and where to bail."
• No signal services, no paid groups. No paid community, no "trade along with me," no so-called inside information.
• No promised returns. Anyone guaranteeing steady profits, capital protection, or X percent a month is a danger sign. I don't even guarantee it for myself, let alone for you.
• Not a licensed investment adviser. I hold no financial license; the content here is explanation and shared experience and is not investment advice. For real, major decisions, consult a licensed professional.

How this site keeps the lights on

Let me be plain: part of Yudi's income comes from a promotional relationship with exchanges. The "open account" and "sign up" buttons in the articles pass through the site's own /go/ redirect pages, carrying my invite codes (BNB2301 for Binance, OK2301 for OKX) on to the exchange. If you sign up and trade through these links, this site may receive a promotional fee from the exchange.

The key point: this costs you nothing extra — the invite code usually gets you a fee discount instead. Whether to sign up, which to use, how much to put in, is entirely your decision. I'm not hiding this relationship; the details are in the Disclosure. I've also made my peace with one thing: precisely because my income is tied to whether you stick around, I have all the more reason not to talk you into risking and losing money. Telling you the risks straight, so you last a long time, is the deal that's good for both of us.

The person writing all this

Below is lead writer Zhou Shen's own introduction; read it and you can roughly judge whether to trust any of this.

Spotted an error, got a suggestion, or want to collaborate? Write to [email protected]. This site takes accuracy seriously — confirmed errors get corrected publicly, with the record kept in Corrections.