When you first enter the crypto world, the most headache-inducing thing is reading candlestick charts—there are so many red and green candles, and it's hard to understand what they mean. Actually, Bitcoin candlestick charts look complicated, but mastering a few key points can help you get started quickly.

Let's start with the basics—the candlestick (K-line) condenses price fluctuations over a period of time into a single line. Imagine that from open to close today, the price fluctuated up and down; the highest point it reached and the lowest point it dropped to are all recorded in this one candlestick. The thin line above is called the upper shadow, representing the highest price of the day; the thin line below is called the lower shadow, representing the lowest price. The thick bar in the middle shows the range between the opening and closing prices.

Color is very important—green candlesticks indicate the closing price was higher than the opening price, meaning the price went up; red candlesticks indicate the closing price was lower than the opening price, meaning the price went down. Bitcoin candlestick charts follow this logic (similar to US stocks, but Taiwanese stocks are reversed—red for rising, green for falling, which can be confusing). For example, if today opens at $100, rises to $200, drops to $50, and finally closes at $150, that would be a green candlestick, with the upper shadow at $200, the lower shadow at $50, and the body from $100 to $150.

Next, there's the concept of daily, weekly, and monthly candlesticks. Daily K-line records the price movement within 24 hours; weekly K-line condenses the weekly rise and fall into one line; monthly K-line covers an entire month. The time intervals are calculated based on UTC—each week switches at 11:59:59 PM on Sunday, which in Taiwan time is Monday morning at 8 AM; monthly K-line switches at the last day of the month at the same time. Cryptocurrency trading is open 24/7, so K-line times differ from US and Taiwanese stock markets, which have fixed trading hours.

How to use candlesticks to judge buying and selling strength? Look at the shadows. If the upper shadow is very long and the lower shadow is short, it indicates strong selling pressure and weak buying; conversely, a long lower shadow and a short upper shadow suggest strong buying and weak selling. Sometimes you'll see a candlestick with a particularly long upper shadow—that means the price surged high during the session but couldn't hold those gains and was pushed down at the end—this is called a "hanging man," which often hints at a potential decline afterward.

Finally, a reminder: candlesticks are just tools, not crystal balls. They only tell you what happened in the past; they can't predict the future. To effectively analyze Bitcoin candlestick charts and determine trends, you should also use technical indicators like moving averages, KD, MACD, etc., to make more reliable decisions. Relying solely on candlesticks to place orders is too naive.