When Bitcoin falls, altcoins react immediately. I'm not worried about Bitcoin's decline; what I fear the most is altcoins. When Bitcoin drops by 1%, altcoins dare to drop by 10%.

I bought an altcoin and got stopped out immediately, and the key is that once you're stopped out, you can't buy it back; the speed is so fast that there's no time to react.

The rise and fall don't matter, what I fear the most is this back and forth, directly crashing.

Then it just goes back to the original level as if nothing happened. What I fear is this kind of market, in an unregulated place, anything can happen.