BBI, also known as long and short index, is a comprehensive index of moving averages, which is calculated by the weighted average method of several moving averages on different days. BBI index itself is an improvement of MA index of ordinary moving average.

Application method:

If the price falls below the long and short line, it is a selling signal; Breaking through the long and short lines upward is a buying signal; The long and short indicators increase from bottom to top, and the price is above the long and short line, indicating that the bulls are strong and can continue to hold; The long-short indicator decreases from top to bottom, and the price is below the long-short line, indicating that the bears are strong and generally not suitable for buying.