I use the market to teach. Please look at the line $ETH in the picture below.

What did I say before in the content I quoted? The market has turned around in the short term, so how do we judge whether it is a trend change? There are two situations.

1. Falling below the trend line by 3 K lines

2. In the relay stage, a large K-line breaks down directly

Then the trend we are describing now is the bull market turning into a down market.

So how do we use support and resistance?

1. In an upward trend, the support is to go long on the left side

2. In a downward trend, the resistance is the short selling point on the left