Before the "312 Black Swan" event, I thought I was an invincible captain in the crypto sea — until my 12 million position was wiped out in just half an hour. The cold touch of the phone screen, that feeling of despair, I still can't forget it to this day.

But sometimes, the biggest losses are the best lessons. After being awakened, I suddenly understood a principle: the essence of contract trading is a probability game, not a dream of getting rich overnight. Using the remaining 800,000 yuan principal, I started over, combining a "dynamic hedging model." By February this year, I had grown the account to 2.18 million in 60 days. It’s not some miracle, just the right method.

Over the years, I have summarized a few iron rules for survival in the crypto world, each learned the hard way:

**Volume is the thermometer of market sentiment.** Candlestick charts only show the results; what truly determines the trend is trading volume. Shrinking volume indicates no one is playing anymore; a surge in volume signals capital inflow. Learning to read this indicator is more important than anything else.

**Fast rise and slow fall are manipulator tricks.** Sudden slow declines after rapid increases are usually shakeouts; don't be scared off. What does a true top look like? After a volume-driven rally, the price immediately crashes down — that’s a trap to lure more traders.

**Fast fall and slow rise warn of potential sell-offs.** After a flash crash, a slow rebound may look like a good chance to scoop up cheap coins, but it’s often the final blow. Don’t be naive and think, "It’s fallen so much; it can’t go lower." — It often can.

**High volume at high levels isn’t necessarily the end; no volume is the most dangerous.** If there’s still trading volume at a high level, it means someone is still taking profits, and another rally may happen. But if the market suddenly becomes silent at high levels, with no trading volume, it’s usually the night before a big crash.

**Volume at the bottom needs to be sustained.** A one-time volume spike might be a false signal; real accumulation happens with continuous volume over multiple days, especially after a period of low-volume consolidation.

**MACD strategy combined with volume analysis doubles effectiveness.** I’ve used this approach for years, often getting an early edge at key points of trend reversals. But the core logic is always the same: learning to dance with risk is the true way to survive in the crypto world.