What noise does the plane flying to Yiwu make in the middle of the night?

I'm sorry to hear that you are troubled by the noise caused by the late-night flight in Yiwu. Here are some possible reasons and solutions:

1. Flight training: Yiwu Airport is an airport for training pilots, and flight training may be conducted in the middle of the night. This is a normal airport activity, but it may produce noise. At night, you can try to use earplugs or noise-reducing headphones to reduce the impact of noise.

2. Flight delay: If the flight is delayed, the airline may arrange for the flight to take off or land at midnight. This may lead to an increase in noise. At night, you can try to close the window or use noise cancellation equipment to reduce the impact of noise.

3. Model airplane activities: You mentioned that the noise of the model airplane disturbed people around Yiwu Airport. If there is model airplane activity nearby, there may be noise in the middle of the night. You can try to contact the local law enforcement department to understand the local regulations on model airplane activities and how to complain about model airplane noise.

4. Birds fly: Sometimes, birds may fly around in the middle of the night and make noise. This may be temporary, but you can try to contact the local wildlife protection agency to learn how to reduce bird noise.

In short, if you are troubled by the problem of aircraft noise in the middle of the night, you can try to take the above measures to reduce the impact of noise. In addition, you can also contact the customer service department of the local airport or airline to learn more about the noise problem and ask for help.