The market suddenly "cooled down"? Don't panic, this kind of decline is actually the healthiest kind!

If the market keeps rising, that's truly dangerous. Proper pullbacks are actually the market "self-healing."
This small decline is essentially the capital doing two things: first, realizing some profits; second, reallocating positions. It sounds boring, but this is the foundation for the market's sustainable operation.
The key point is—whether the decline is "moderate." Currently, this slow downward trend shows no signs of panic selling, nor is there a surge in trading volume, indicating the market is not out of control.
Many beginners tend to make a mistake: treating every decline as a trend reversal. The result is, they run at the first drop, chase at the first rise, and end up being repeatedly "taught" by the market.
Looking at sector rotation, during small dips, capital often flows from high-priced targets to low-priced potential targets. This "underlying current" is more worth paying attention to than surface prices.
Regarding signals, focus on three points:
1) Whether there is increased volume during the decline;
2) Whether key support levels are broken;
3) Whether market sentiment suddenly becomes extreme.
If none of these occur, it's most likely just a "normal fluctuation."
In summary: the market isn't broken; it's just catching its breath. What you should do is not panic, but judge whether this breath is a rest or a sign to turn around.