2. Pat the duck with a knife the day before departure, then smear the whole duck with salt and monosodium glutamate, pour in a little soy sauce and garlic pat and put it in a fresh-keeping bag for refrigeration.
3. The next day, I came to an open place to set up a kiln (because I have to pay attention to safety when making firewood) and then started to make a fire.
4. Use firewood to burn the clods red, and the firewood will burn the raw charcoal.
5. Wrap the salted duck and the egg sweet potato with a thick layer of tin foil.
6. Soak the newspaper, stir the red soil with water, and wrap the paper with wet newspaper and red soil.
7. Then put it in a kiln, break the soil and make it stuffy. Dig the soil next to it and cover it thick. We can dig for treasure in three hours.