Trim fat from the steak and cut into 1-inch cubes. Combine the soy sauce, sesame oil, rice wine/sherry, egg white and salt in a glass bowl. Add the beef and stir to coat. Marinate for 1 hour, covered in the refrigerator.
Place peanut/corn oil in a wok, swirling to coat the sides, and place over high heat. Add the chilies and cook until they begin to darken. Add the garlic, ginger and Szechwan pepper; continue to cook to infuse the oil. Add the scallions and bell pepper. Remove the steak from the marinade and add it to the wok. Stir-fry the beef for 3 minutes until brown. Blend in soy sauce, rice wine, Chinese vinegar, sugar and chicken broth. Dissolve the cornstarch slurry and add it to the sauce, stirring, to thicken. Sprinkle in the peanuts and stir to coat. Serve over rice.