In a medium pot, add 5 cups of water, 3 slices of ginger, the 2 whole scallions, 1½ tablespoons salt, and 2 tablespoons Shaoxing wine. Bring the mixture to a boil. Add the shrimp and stir slowly. The shrimp will cook very fast, and they’re done once they’ve turned completely pink. It should only take a minute. Scoop the shrimp out of the pot immediately to avoid overcooking. Plate and serve with the dipping sauce!