The gas pipeline cannot be next to the exhaust pipe of the range hood. The temperature of the exhaust pipe of the range hood will be affected by the lampblack when it discharges lampblack, which is generally around 40 degrees Celsius. Although the current gas pipe is resistant to high temperature, if it is close to the exhaust pipe of the range hood for a long time, it will accelerate the aging speed of the gas pipe and may also lead to safety accidents.