The data I like to look at every day,

1. ETF (BTC, ETH, SOL, XRP) inflow and outflow data from yesterday. The essence of ETFs now is essentially the retail investors in the U.S., and due to various reasons, they cannot, will not, or are unwilling to choose to hold onto their positions on exchanges. This inflow and outflow data is actually a judgment of the sentiment of these retail investors in the U.S.

2. MicroStrategy's holdings and buying situation. Everyone should know that MicroStrategy has been buying Bitcoin for several years and has never sold, but recently the buying power has indeed weakened, which is related to external doubts about him and also to previous instances where people shorted his stock and then bought Bitcoin as a hedge, leading to a significant drop in stock price and subsequent refinancing difficulties. So, if pushed to a certain extent, will they sell? If they start selling, it will definitely cause a huge shock.

3. Monitoring of giant whales on Hype. The market is composed of collective forces, and the influence of whales is indeed greater, so monitoring is essential.