Cut the bean threads noodles from the middle and put it in a bowl, add hot water in the bowl and soak it in for 15 minutes. Then, drained it and set aside.
Heat a wok with oil, and stir-fry green peppercorns until fragrant. Add pork belly and stir-fry it under middle heat for 40 seconds until the lard in the minced meat comes out.
Add the ginger, garlic, red pickled pepper and doubanjiang in the wok and stir-fry it until fragrant.
Add the sweet potato vermicelli and stir-fry under middle heat for 30seconds.And then seasoning the vermicelli with light soy sauce, dark soy sauce, salt, sugar and monosodium glutamate and stir-fry evenly.
Add the green onion, celery, garlic sprout and some vegetable oil and stir-fry a few times. Transfer it on a plate and serve.