Mix shrimp with salt. Add cornstarch. Marinate in refrigerator for 1 hour. Prepare the sauce by mixing 6 tbsp chicken broth, 1 tsp sugar, 1 tsp salt, 1/4 cup ketchup and 2 tbsp chili oil (not listed in the ingredients). Deep fry the marinated shrimp for 1 to 2 minutes till they turn pink. Dry on a paper towel. Ina bit of oil stir fry ginger, green onions, green pepper and red pepper. After a minute, add in the sauce. Return the shrimp to the wok. Add 1 tbsp of cornstarch mixed with some water. Let cook for a minute.