How did I set my own trading rules for $BTC ? A simple framework that beginners can use (not investment advice)
"At this price level, can I still buy $BTC?"
Honestly, there's no standard answer to this question. But during this time, I have established a simple set of trading rules for myself, and I’m sharing them, which might give you some reference (not investment advice, just my learning record).
1. I first accept a reality: no one can accurately buy at the bottom/sell at the top.
When looking at the K-line, you will find that every major rise and fall looks very clear in hindsight, but it’s quite chaotic when it happens.

So my first rule is: do not pursue buying at the lowest or selling at the highest, just aim for the overall direction to be correct, and not to blow up my position.
2. Position management is much more important than "guessing direction".
No matter where the current price is, I set for myself:
The total position of crypto assets should not exceed X% of the investable funds;
Within this position, a single currency (like $BTC) should not exceed Y% of total assets;
For the contract portion, only use a very small position and try not to use high leverage.
The benefit of doing this is: even if I make a few wrong judgments, I won’t lose so much that I can’t sleep at night.
3. After completing each transaction, I will simply note down: why I bought, how the price moved after buying, and where I can do better next time.
These may seem "slow", but for an ordinary person like me, it’s much more comfortable than frequently chasing highs and cutting losses.
4. Final reminder
The above are my personal trading rules on $BTC , which are only suitable for my own risk tolerance.
Cryptocurrency is highly volatile, and you must decide how to play based on your financial situation and stress tolerance.
This is not investment advice, just my personal record.
If you plan to make some operations on $BTC , you can check the current price and trends from the currency tags/charts above. Remember to think clearly about your position and stop-loss points before placing an order.