1. Peel the old ginger and cut it into thin slices, and cut the red pepper into filaments. Boil water and white sugar in a pot with high fire until they are dissolved, then add white vinegar and salt, leave the fire and let it cool completely to make pickled sweet and sour juice.
2. Clean pig hair from pig hands, wash it and cook it in boiling water for 2 minutes, then take it out and rinse it with running water, and then soak it in cold water for 1 hour.
3. Drain the pig's hand, split it from the middle with a knife, cut it into small pieces about 3cm square, and then wash it with running water.
4. Put the chopped pork hands, ginger slices and Guangdong rice wine into boiling water again, add salt and cook for 2 minutes.
5. Then, take out the pig's hand pieces and put them into ice cubes, and then add enough cold water to completely immerse the pig's hand pieces and ice them for about 1 hour.
6. Finally, put the chilled pork hand pieces and shredded red pepper into the prepared pickled sweet and sour juice and soak for 6 hours.