Actually, I initially wanted to specifically state that only a few "mainstream" tokens, such as $BTC, exist. However, I did have a friend who bought some Dogecoin without knowing when, and when he accidentally cleaned his wallet a couple of years ago, he found out that it was worth several million RMB. He even flew to Singapore to treat me to drinks because of it. Therefore, I did not add any qualifiers. After all, in the early days, Bitcoin was just an Altcoin. Who knows if a second or third "BTC" will emerge in the future? But indeed, for Altcoin and memes, the probability of going to zero is far greater than the probability of a Bitcoin-like entity emerging. Ultimately, the world pays the price for its own perceptions.