Recently, many people have asked me, how do you actually play cryptocurrency to make money? Honestly, that's a good question because many people think investing in virtual currencies is too simple, just buy low and sell high, but it's actually much more than that.

I've summarized the various ways I've encountered to make money with cryptocurrencies over the years, about a dozen or so, but only a few are truly effective. Let's start with the most straightforward: buy low, sell high. This method has the lowest barrier to entry, you can start with just a few thousand dollars, holding for a few days to weeks for short-term trading, or for several years for long-term holding. But honestly, the test isn't technical skill, it's patience. The market fluctuates so wildly that a 20% daily rise or fall is not unusual, and if your mental resilience isn't strong, it's easy to get trapped.

Next is arbitrage trading, which sounds good. The same coin has different prices on different platforms, so buy low on one and sell high on another. In theory, it's risk-free, but in practice, opportunities are scarce. Plus, if you're slow, the price difference might disappear, and with trading fees and withdrawal costs, it's easy to lose money. This kind of play is now basically the domain of quantitative teams.

I need to say a few words about futures contracts. These are financial derivatives that appeared in the past decade, using leverage to amplify gains but also losses. I've seen too many people get liquidated out of greed, going from riches to rags overnight. So if you want to play, be sure to choose a platform with "negative balance protection," where each trade's loss doesn't exceed 2% of your total capital, and keep leverage conservative.

Mining is a topic that's a bit awkward now. It used to be mainstream, but now the barriers are ridiculously high. You need multiple mining rigs and cheap electricity, which is basically impossible to break even on in Taiwan. Unless you join a mining pool or entrust a professional team, then there's a chance to earn some profit. But the entire industry is heavily capitalized and monopolized, making it hard for retail investors to get a piece of the pie.

I'm more optimistic about DeFi mining. You don't need mining rigs; just deposit your coins into a decentralized exchange as liquidity to earn trading fees. Annual yields can range from 5% to 50%, depending on the volatility of the token. But the risks are significant—smart contract bugs, hacking, and other vulnerabilities. I recommend having at least $500 in principal; otherwise, gas fees will eat up most of your profits.

Participating in IEOs (Initial Exchange Offerings) is also a good option. New tokens often see significant gains on their first day, but you need priority subscription rights, which usually require holding certain platform tokens. This method requires some capital, typically over 10k TWD, to be effective, and there's a risk that the new token might fail after listing, so it's not without danger.

Holding coins for interest is the laziest method. Deposit your cryptocurrencies and wait for interest, like a bank fixed deposit. Stablecoins can yield about 3-8% annually, sometimes over 10% with regular deposits. The lowest risk, but also the lowest returns. If the coin price drops sharply, the interest might not even cover the loss.

Then there's yield aggregators, which automatically allocate your assets to the highest-yielding opportunities, saving you from daily monitoring. But this requires some understanding of DeFi, and smart contract risks still exist.

NFT rental is a newer method. If you own useful NFTs, you can rent them out for rental income. But the prerequisite is that your NFT has actual utility and there's demand for rental. Floor prices typically range from a few hundred to tens of thousands of dollars, so it's not suitable for small investors.

Besides these, there are ways to earn free cryptocurrencies. Airdrops are the most common, but 90% of airdrops are junk tokens. Referring friends to open accounts can also earn rewards, but it depends on whether the platform still runs such campaigns. SocialFi content creation—posting articles, comments, likes—can earn rewards, but if you're not famous, the income is minimal. Creating NFTs is easy, but the chances of selling are low. Watching videos to earn Bitcoin, shopping rebates, and similar methods are more fringe and won't earn much.

All in all, the core message is: making money with cryptocurrencies has no shortcuts. You either invest capital, time, or knowledge. Choose the method that suits you, stick with it, and you might see gains. I personally recommend beginners start with buy low, sell high, or interest-earning methods, then try other strategies once you gain experience. Currently, Bitcoin is over $76k, and Ethereum is over $2,000. If you're optimistic about the long-term trend, consider dollar-cost averaging. But remember, all investments carry risks—only invest what you can afford to lose.