Wash the grass carp. Taken the meat along with the fish bones, and cut it into pieces. Add it with cooking wine, egg white, salt, pepper and starch in a bowl and mix well. Set aside and marinated it for about 10 minutes.
Heat a wok with sesame oil, and stir-fry the tofu skin and green vegetable until fragrant. Transfer in a large bowl and set aside.
Heat a wok with oil and doubanjiang, and stir-fry the Sichuanese peppercorn, green onion, ginger, garlic, red pepper until fragrant. Add the fish born and fish head and stir-fry until discolored.
Add water in the wok and cook it under small heat for 10 minutes. Add the fish fillets in the wok and cook until it becomes white and float to the surface. Season with sesame oil and salt. And then, pour the fish soup into the large bowl of tofu skin.
Heat a wok with 100g oil until it smokes. Pour the hot oil on the fish fillets. Serve.