The big cycle is mainly used to judge the direction, and the small cycle is used to find the timing or position of opening or closing positions.

Generally speaking, the direction of the big cycle is more stable, and trading along the direction of the big cycle is easier to go in the right direction in the long run. However, the location and timing of the big cycle are very extensive. Although the direction of the forecast may be more accurate, the location and timing are not well grasped, and the planned profit-loss ratio may not be cost-effective. Therefore, it is a good trading idea to judge the direction with a large cycle and trade a specific position with a small cycle.