Regarding K-line, there are a few more issues to discuss: Although pure K-line may seem very simple, the simpler things are, the more difficult they become to use, and the more rich trading experience is needed.

1. Many people highly praise naked K-line because it is the simplest and most straightforward form. The so-called 'great way is extremely simple' suggests that mastering naked K-line is superior to other technical forms, but this is not the case. The simpler the form, the lower the margin for error, which requires traders to have rich trading experience. Other indicators, on the other hand, are the performance of K-lines after quantification on the chart, making them clearer and simpler to read, and are also a good choice. For example, finding resistance levels using the highs and lows of K-lines on a chart requires comprehensive judgment from the trader, whereas using moving averages as resistance levels allows for an immediate understanding.

2. K-line is not magical. K-lines merely represent the trajectory of price movement. The methods of using K-lines are explained in detail in many trading books, mainly focusing on the reversal and continuation structures of K-lines. Additionally, K-lines can be combined with other indicators to form trading systems. There are many exaggerated views about magical naked K-lines online, which overstate the role of K-lines. K-lines cannot predict the future; like other indicators, they should be used as a standard for judging trends. We must view and use this scientifically.