1. Hang the cut ham with a rope, place it in a cool and ventilated place, and keep it dry to preserve it.

2. Put the cut ham in the refrigerator. If it is for a long time, we can also use the freezing method.

3. Apply a layer of cooking oil to the surface of the cut ham to isolate the air. This method can also help preserve the ham.

4. Seal the ham in a vacuum plastic bag. This will isolate the air and prevent oxidation, thus preserving its freshness and long-term preservation.