Many people ask me how I can stay profitable in the crypto world for so long. To be honest, there's nothing mysterious about it; it's just about mastering a few simple rules.

For short-term trading, I mainly look at the 5-day moving average. If the price is above it, I hold; if it drops below, I cut losses immediately. For mid-term, I watch the 20-day moving average, with the same logic. It sounds simple, but sticking to this rule can help most people survive longer. The problem for many isn't the method being wrong but the execution being inconsistent.

When a major upward wave is forming, you should decisively enter when there's no volume. Continue holding as it gains volume and rises. If there's a pullback with decreasing volume but the trend hasn't broken, do nothing. The truly dangerous signal is volume dropping and breaking below the trendline, at which point you should consider reducing your position. This logic has never failed me.

If after entering a short-term position there’s no clear movement within three days, take profits if possible—don't fight floating losses. If you happen to buy wrong, once the loss reaches 5%, accept it unconditionally because that often signals a problem with your judgment.

There's an interesting phenomenon: if a coin drops more than 50% from its all-time high and continues to decline for over 8 days, it often marks a bottom area, and a rebound can come suddenly. Many of my gains come from catching these rebounds.

Bitcoin and other leading coins tend to rise the fastest during rallies and are also the most resilient during declines. Beginners often make the mistake of rushing in after a big drop or hesitating after a big rise. The real question is where to buy; the purchase price isn't about being as low as possible but about being as suitable as possible.

Always follow the trend; don't try to catch the bottom all the time. During a decline, don’t hastily judge that the bottom has arrived, and don’t hold onto coins that are already performing poorly. Trend trading is simple—you either follow it or stay away. There’s no third option.

Honestly, the hardest part isn't catching a wave but consistently making money. I often review my trades, asking myself whether my profits were due to luck or skill, so I can gradually build a stable trading system. Once the system is in place, it’s about repeating the process.

One last often-overlooked point: holding no position is also a strategy. When you're not confident, don’t trade. This can avoid many unnecessary losses. The primary goal of trading is survival, then profit. It’s not about trading frequency but about the success rate of each trade.