It is not advisable to see big trees in front of the door or in the window. How close they are to the residential trees will inevitably gather in the shade, which will prevent the yang from entering and cause the imbalance between yin and yang, and will prevent the anger from entering the house. In geomantic omen, a big tree blocks a house, which is called a heart-piercing house or a top-centered cedar "; Its shape is like an object hitting the chest directly, so it is generally due to lung, respiratory system and heart problems. Seeing dead trees in front of the house or near the window, the taboo of floating in the water, the combination of dead air and Yin Qi have dual functions in geography. Swallowing dead trees will give off a bad magnetic field, interfere with nearby creatures, and easily have adverse effects on people's health, such as poor speech, lack of career, frequent ailments, poor spirit, easy fatigue, and children will have many respiratory diseases. It is not advisable to see telephone poles and lampposts in front of the door; However, the high-voltage electric frame should not be close to the house, which will become a strong electromagnetic field, seriously interfere with the living things in the house, affect the spirit and body, and make the fortune implicated.