Talk about the deficiency of K-line according to my own experience;
1, the main force is easy to cheat with the typical K-line form.
2, the price operation is not "continuous", so there are moving average indicators.
3. It cannot reflect the intraday trading intensity of key points.
4.k-line analysis is generally used for short-term analysis or key points, which is not helpful for long-term prediction.
5.k-line analysis, including any other technical analysis tools, is probability, not absolute.
I hope I can help you.