During the graphics process, the will decrease until the price rises again to the third low, and the begins to increase, forming a confirmation triple bottom signal. The triple bottom is a model that predicts a reversal of the long-term downward trend. When the third trough occurs at almost the same price level, it can be determined as a triple bottom. When the third rebound is in the support position, it reflects that the buying interest is greater than the interest of the shipment. The trend of the market rebound is roughly fixed.