2. Wash the beef, pat it loose with a knife and cut it into even slices.
3. Add salt and raw flour to the beef, grab it hard and massage the beef for ten minutes, so that the salt and raw flour can be completely integrated with the beef.
4. Boil the water, add the ginger slices, and slowly put the beef into the pot with chopsticks.
5. After the soup is boiled, add some salt to taste.