About K-line

K-line (also known as candlestick chart) is one of the most commonly used charts in technical analysis, used to display the price fluctuations of financial products such as stocks and futures over a certain period of time.
K-line not only reflects the opening price, closing price, highest price, and lowest price, but also provides hints about market sentiment and trend changes through its shape.
Each K-line consists of four key prices:
Opening price: the first trading price during this period;
Closing price: the last trading price during this period;
Highest price: the highest trading price during this period;
Lowest price: the lowest trading price during this period.
There are two main forms of K-line patterns:
Yang line (red): indicates a price increase, with the closing price higher than the opening price.
Yin line (green or black): indicates a price decrease, with the closing price lower than the opening price.