In a bowl, combine the pork slices with 1 tablespoon soy sauce, 2 teaspoons rice wine, and 1 teaspoon cornstarch. Mix well and let it marinate for about 10 minutes. This little wait will make the pork tender and flavorful.
In a small bowl, whisk together 2 tablespoons soy sauce, hoisin sauce, rice vinegar, sugar, sesame oil, 1 teaspoon cornstarch, ground Szechuan pepper, and the red pepper flakes.
Heat 1 tablespoon of vegetable oil in a large skillet or wok over medium-high heat. Add the marinated pork and stir-fry until it's just cooked through and slightly browned. It should take about 3-4 minutes. Remove the pork from the skillet and set it aside.
In the same skillet, add the remaining 1 tablespoon oil. Toss in the bell peppers, onion, garlic, and ginger. Stir-fry these veggies for about 2-3 minutes until they're just softened but still crisp.
Return the cooked pork to the skillet with the vegetables. Pour in the Szechuan sauce and chicken broth, then stir everything together. Cook for another 2-3 minutes until the sauce thickens slightly and everything is well-coated and heated through.
Serve this Szechuan Pork hot with steamed rice or noodles.