1、 The attack line is5Daily moving average.Its main function is to promote the formation of an attacking trend in prices in the short term, continuously guiding prices to rise or fall. If the upward angle of the attack line is steep and strong (without any bending or weakness), it indicates that the price has strong short-term explosive power. On the contrary, it is weak. Similarly, when the price enters a downward phase, the attack line is also an important weapon for killing. If the downward angle is steep, the killing force is extremely strong.