Roast duck box, why does the gas suddenly ring after a while?

Is there a damper under your roast duck stove? This is a small piece of iron. Adjust it left and right to see how big the hole is. Generally, there is no noise in the damper, and the flame is blue. If there is still noise, please reinstall the burner on the surface to see if it is not pressed correctly. If this doesn't solve the problem, you'd better not use this gas stove. Generally speaking, the sound of gas stoves is low. It's caused by excessive gas output, so it's better to start a big fire. In addition, when igniting the gas, don't wait for the overflowing gas to ignite for too long, it will also ring. You should turn on the gas tank for a second or two before lighting the gas.