Tomorrow is 519 again. Do you remember that year? The black swan event in the crypto world, I still feel a bit bittersweet when I think about it. The number of people who were looted at that time is countless. That thrill of huge ups and downs, honestly, it's really hard to experience again now.

On May 19, 2021, the cryptocurrency market experienced an unprecedented crash. Speaking of which, the trigger for this 519 incident was actually quite dramatic. Elon Musk first went on Twitter to wildly promote Bitcoin, invested 1.5 billion USD with Tesla, and announced accepting BTC payments, even frequently boosting Dogecoin. As a result, by mid-May, this guy did a 180-degree turn. First, he said Tesla would stop accepting Bitcoin payments, citing environmental concerns, and Bitcoin immediately dropped from $57,000 to $46,000. Then he hinted at possibly selling, causing market confidence to collapse instantly.

Of course, Musk was just the surface reason. The real problem was that the entire market had already gone crazy in the first four months of 2021. Bitcoin rose from $30,000 at the beginning of the year to $64,000 in April, and other mainstream coins also doubled or tripled. Those smaller altcoins were even more outrageous—Dogecoin, Shiba Inu, these went from a few cents to several dollars, entirely driven by social media hype and speculative traders. Plus, regulatory signals from China also appeared, with the three major associations jointly issuing statements banning virtual currency trading, and Inner Mongolia starting to crack down on mining. These didn't seem like new regulations, but the market interpreted them as signals of suppression, and panic started spreading.

By the early morning of May 19, the crypto market entered the trigger phase. Bitcoin plummeted from $43,000 the night before to $30,000 in the morning—a 30% drop. Ethereum fell from $3,300 to $1,900, a 42% decline. Other coins fared even worse, with drops over 30%, some even over 50%. Exchanges were overwhelmed, many couldn't close their positions, and everyone could only watch their assets shrink. The market's fear index soared to a historic high of 0.8, and the greed index dropped to 10—total chaos everywhere.

But luckily, this wasn't a forever bear market. By the afternoon of May 19, the market started to rebound. Some institutions and big players began to buy the dip, and Bitcoin recovered to $40,000, Ethereum climbed back to $2,800. The recovery was pretty quick; by May 20, market sentiment had eased significantly. Later, it entered a correction phase, with Bitcoin fluctuating between $35,000 and $40,000, and the market gradually regained rationality.

Looking back at the 519 event now, it was truly one of the most exciting moments in crypto history. But honestly, these days, Bitcoin is tightly controlled by Wall Street, and that wild, impulsive feeling of "it comes when it wants, drops when it wants" is gone. The crypto scene now is no longer what it was back then—institutions have entered, regulations have caught up, the market has matured, but that thrill has indeed faded. Every time May 19 rolls around, old-timers think of that black swan, that exhilarating feeling, and it’s still hard to forget.