We can familiarize ourselves with the candlestick chart.
A candlestick chart is a bar-like line drawn based on the trend of prices or indices within a certain period.
As shown in the following diagram, the middle rectangle is called the body, which reflects the sentiment of the cohort. The thin line above the body is called the upper shadow, and the thin line below is called the lower shadow, which generally reflects the level of panic among traders. The body can be either a positive line or a negative line, which we usually represent in red or green.