说明：  123模式是一种非常流行的市场结构，使用灵活且准确可靠。该模式由三部分组成：1底部或顶部（波峰或波谷）；2介于38.2%和61.8%之间的斐波那契回撤；3确定的突破入场信号。只有当价格突破最后一个波峰或波谷时，123模式才能确认生效，此时指标会自动绘制出方向性箭头并产生警报，然后我们才能顺着箭头的方向进行交易。
(123 model is a very popular market structure, which is flexible, accurate and reliable. The model consists of three parts: 1) bottom or top (crest or trough); 2) Fibonacci retreat between 38.2% and 61.8%; 3) definite breakthrough entry signal. Only when the price breaks through the last peak or trough can the 123 mode be confirmed to take effect. At this time, the indicator will automatically draw a directional arrow and generate an alarm, and then we can trade in the direction of the arrow.)