1. The traditional technical analysis law holds that: "When MCL deviates from the stock price at the top, it should be considered to sell; When MCL and the stock price deviate from the bottom, we should consider buying nearby. " But in fact, the biggest difference between MCL indicator and other indicators is that the deviation signal of this indicator will not only affect the rise and fall of the stock market, on the contrary, sometimes the more deviation, the more it can promote the further deepening of the market.

2. The application rules of MCL index are only a reference, because the same MCL index is different between Shanghai and Shenzhen stock markets. In addition, MCL indicators are different in different periods. Therefore, when applying MCL index, the standards of overbought and oversold should change with the change of market. We should not only pay attention to the level of index data, but also pay attention to the development trend of indicators, and make judgments with other trend technical indicators. Especially when the MCL index hits a new high or a new low, it is often when the market bottoms out.