Step 1Place the chicken in enough boiling water in a wok or pot to cover the chicken. Turn down heat and simmer until tender but not overdone, about 17 to 20 minutes. Remove the chicken, drain and allow to cool completely.
Step 2Combine the green onion, ginger, soy sauce, vinegar, sesame oil, Sichuan pepper and sugar in a bowl.
Step 3Cut the cooled chicken into thin slices and arrange attractively on a serving platter. Pour the seasonings over the chicken slices and garnish with parsley. Serve at room temperature.