[Technical Post] - Use trend lines to capture buying and selling points - What is the 123 rule? 1. After the upward trend line is established, the price of the currency falls back without breaking the trend line, which is a buying point. 2. After the upward trend line is established, the price of the currency falls below the trend line and quickly stands on the trend line again, which is a buying point. 3. After the upward trend line is established, the price of the currency falls below the trend line, which is a selling point. 4. After the upward trend line is established, the price of the currency falls below the trend line, and the pullback trend line is blocked, which is a selling point. 5. After the downward trend line is established, the high point of the currency price is under pressure from the trend line, which is a selling point. 6. After the downward trend line is established, the price of the currency breaks through the trend line and quickly falls below the trend line, which is a selling point. 7. After the downward trend line is established, the price of the currency breaks through the trend line, which is a buying point. [This is not a new technical post. Synchronize the square]