Wash the green chili peppers, remove the stems, and cut them into small pieces. If you desire a milder taste, you can take out the seeds.
Heat the wok or skillet over medium-high heat. Add the Sichuan peppercorns and dry roast them until fragrant. Remove and crush them slightly using a mortar and pestle.
In the same wok, heat the cooking oil. Add the minced garlic and ginger. Sauté for a minute until fragrant.
If using ground pork or minced meat, add it to the wok. Cook until it's browned and cooked through.
Add the chopped green chili peppers and sauté for a few minutes until they start to soften.
Add soy sauce, vinegar, sugar, and salt. Stir-fry for another few minutes, ensuring the flavors are well combined.
Sprinkle the crushed Sichuan peppercorns over the dish and give it a final stir.
Garnish with chopped scallions and remove from heat.