Why and what to do if there's arcing or sparking in the cavity of the Xiaomi Microwave Oven?

To prevent firing in the microwave oven's cavity, please pay attention to the following details:
1. Do not heat food in sealed;
2. When heating food in plastic or paper containers, please remove the strings first. Keep an eye on the microwave oven due to the possibility of ignition;
3. Do not place flammable or combustible materials near the microwave oven;
4. Do not heat foods with high oil or fat content, as the temperature of the oil can become very high and lead to situations beyond control;
5. After each use, first wipe away any food or grease splatters inside the oven with a damp cloth and then with a dry cloth to prevent black smoke or fire;
6. If food is heated in disposable utensils, please keep an eye on the cooking progress of the food;
7. If smoke is observed, switch off or unplug the appliance and keep the door closed to stifle any flames.