1, acid-vinegar method. Vinegar can remove rust. First, heat the pot, turn off the fire, and wipe the rust directly with a rag and some vinegar.

2. Lard method. Lard is rich in oil, so don't be afraid of rust.

3. Taomi water. Taomi water has a strong decontamination effect.

Soak in concentrated rice washing water for about 2-3 hours.

Boil the rice washing water, and use an iron rag to wipe it bit by bit during the burning process.