A line of battle (advanced tactics)

1. Whether it is the stock market or the currency circle, I found that there is an indicator that is the simplest but also the most classic indicator, which is the BBI indicator. As the simplest indicator, we know that this indicator reflects the result of the long-short battle. If the bulls win, we will be unswervingly bullish and hold. If it falls below, we will unswervingly sell.

The stock market BBI is shown in the figure