I don't know why Bitcoin $BTC has dropped below 90,000 again, and $ETH has fallen below 3,000. The market is so frustrating; it hasn't stayed up for more than a few days before dropping again.

It feels like the impact of geopolitical issues is too significant. Greenland, what the heck is that? The beautiful country is just being domineering—if they like a country's resources, they just go and seize them, no need for any show.

Recently, while browsing Ostium, I learned about the codes XAU, XAG, and also SPX, NDX, HG, NVDA, and PLTR. What do they stand for?
In a nutshell:

XAU: Gold
XAG: Silver
SPX: S&P 500 (US stock market)
NDX: NASDAQ 100 (tech stocks)
HG: Copper (economic indicator)
NVDA: NVIDIA (AI computing power)
PLTR: Palantir (AI + government big data)

For Chinese investors, it's not easy to buy these unless you have a Hong Kong or US stock account.
Actually, now you can also buy and sell US stocks on-chain, and some Web3 exchanges support US stock trading, which is quite convenient.