1, as can be seen from the MACD index, the red column and the green column can neither be infinitely enlarged nor infinitely reduced.

2. The red column is placed at the top of the maximum band, and the green column is placed at the bottom of the maximum band.

3. When the red column and the green column are generally enlarged to the fifth root, you will see the top and bottom of the band, which is to pay attention to selling and buying.

4. The red column goes out when it starts to shrink from the maximum value, and the green column comes into play when it starts to shrink from the maximum value.

Generally speaking, red columns shrink and green columns begin to appear. Similarly, when the green column shrinks, the red column begins to appear. This process in the middle is a belt.