The specific steps are as follows:
1. First, add the chicken pieces into cooking wine, oyster sauce and soy sauce, stir well, add shredded ginger and pepper to marinate the chicken pieces, and marinate for 20 minutes.
2. Knead into dough and wake for 20 minutes.
3. After waking up, roll it into a bigger dumpling skin shape, and then wrap the chicken pieces inside.
4. After wrapping, put it in a pressure cooker and steam it for 20 minutes by pressing the millet porridge button.