Regarding the relationship between news and K-line, see the figure below.
The difference between the two categories lies in fairness.
In the first category, the main institutions can obtain information in advance relative to retail investors, so they operate in advance, so they will leave clues on the K-line, which is the so-called K-line reflecting news; the second type of news is fair to both the main institutions and retail investors, and the time difference between everyone getting the news is not much, so the K-line will not reflect this type of news in advance.
