Arbitrage is everywhere, and it's the same in real life. For example, in a certain seafood market, there are cases where similar products are priced cheaper, and there are quite a few types. This is actually just about saving money, but in the financial markets, if you can find arbitrage opportunities, it's pure profit. The World Cup matches are essentially large negative EV events, in other words, a game where retail investors desperately give money to the big players. It's just that because of the entertainment value of predictions, it's really very attractive to humans, plus the hype and promotion, so people playing the game are also endlessly enthusiastic.

Now, returning to the topic of arbitrage, in everyday external trading, the most common arbitrage is what I’ve been talking about—fee arbitrage. I won't go into detail here; those interested can look up related content themselves. There’s also a type of arbitrage that’s closer to "shearing sheep," which is activity arbitrage, such as the most common trading activities, points collection and airdrop events, like this World Cup prediction activity.