The following materials and tools need to be prepared to clean the burnt health pot: grapefruit skin, alkaline noodles and clear water. The specific operation steps are as follows:

1. First prepare the grapefruit skin, as shown in the figure below.

2. Cut the grapefruit skin into thin strips as required, as shown in the figure below.

3. Put the grapefruit skin into the health pot below, as shown in the figure below.

4. Next, pour a proper amount of water into the health pot, as shown in the figure.

5. Take out the alkaline surface below and pour it into the health pot, as shown in the figure.

6. Just cover the bottom and shake it for cleaning, as shown in the figure below.

7. Finally, the burning of the health pot disappeared, as shown below.