Material preparation: chicken breast 1, half onion, 2 tomatoes, lettuce 1, oyster sauce 1, cooking wine 1, salt 1, starch 1, oil 1.

1. Cut the chicken breast into two pieces and pat it gently with the back of the knife. Add light soy sauce, oyster sauce, cooking wine, salt, starch and black pepper, mix well and marinate 15 minutes.

2, put the oil in the pot, add the onion, stir-fry, and put it in the plate.

3, then add the right amount of oil, add the chicken breast, and slowly fry over low heat.

4. Sprinkle some soy sauce and salt on the chicken breast. After the chicken breast is cooked, color it slightly, and then serve it.

Finally, decorate the plate with tomatoes and lettuce.