Place the mushrooms in hot water for about 30 minutes. Wash and drain, then slice.
Place the chicken in pot of cold water. Bring to a boil until the chicken turns white. Remove from the pot and slice the chicken.
Slice the celery, carrots and green onion.
Pour the soy sauce, cooking wine and vinegar into a small bowl and set aside.
Put a teaspoon of oil in the pan, pour in the soy sauce mix, then add the chicken pieces, stir fry for 3-4 minutes, and set aside.
Put 2 teaspoons of oil in the pan. Sauté the onion then add all the vegetables. Stir fry for 2 minutes.
Add the water and cook for 3 minutes on high heat. Pour in the chicken, stir well, and continue to cook for 1-2 minutes. Pour the contents into a serving bowl.
Wrap the chicken in lettuce leaves and eat immediately.