Introduction - If you have any usage issues, please Google them yourself
There are two definitions of the 1. pen: the new pen and the old pen. We also need to deal with the problem that the top is lower than the bottom and the bottom is higher than the top. There are different definitions, such as whether there is a relationship between the top and bottom K lines, whether the K-line at the top or the bottom is higher or not, whether it needs to compare the high bottom of the closing price. There are too many combinations.