About Dingtouma, and the person who writes it

Who writes this

My name is Zhou An, an ordinary nine-to-five worker — not an analyst, with no "coach" title. At the hottest point of 2021, I piled in with everyone else; in the 2022 downturn my account got cut in half, and only then did I really start to ask: where exactly did this go wrong.

Eventually I figured it out — I lost not because I picked the wrong coin, but because I invested too much from the start, added at the most excited moment, and panicked into selling on the way down. None of those are "did I read it right" problems; they're "can I keep myself in check" problems. What Dingtouma writes about is exactly that — the thing almost nobody covers systematically.

Why I made this site

There's endless content online teaching "how to buy bitcoin" and "which coin will moon," but almost nothing teaching "how not to lose it all." For someone who has just gotten in, the latter matters far more — because as long as you're still in the game, opportunities come back around; once you're knocked out, nothing else matters.

So this place covers only three things: how much to invest, how to allocate it, and how to hold on through a downturn. I've written down the handful of rules I paid for in real money, paired with a few tools you can calculate with directly, hoping you skip a stretch of the detour I took.

What this site will and won't do

• Won't recommend which coin to buy, won't call trades, won't predict prices — I can't do those, and neither can anyone.
• Won't promise any returns. Every calculator here is to help you see "how big the risk is," not to tell you "how much you'll make."
• Will explain the method clearly, cite where the data comes from, and call the uncertain parts uncertain.

How this site pays for itself

Plainly: if you read this and find it useful, decide to open a trading account, and register with Binance through this site's link and referral code (BN1918), I receive a referral fee from Binance, while you don't pay a single cent more — in fact you get a fee discount. This is the site's only source of income, and I put it out in the open; see the disclosure for details.

I only recommend the Binance I use myself; I won't list a stack of platforms just to earn a bit more.

Where the content comes from, and what happens when it's wrong

The content here is my personal experience, plus publicly verifiable data (prices, historical drawdowns and the like are all sourced). I'm not an expert, and mistakes are inevitable — if you spot something wrong, tell me, I'll fix it, and I'll note what changed in the corrections log.

For questions or corrections, email: [email protected].

Last updated: June 2026