Beat the eggs and season with a little salt and pepper.
Chop tomato, shrimp, and green onion, then mix into the beaten eggs.
Stir-fry everything in cooking oil and set aside.
In a pan, add 1 cup water, soy sauce, oyster sauce, and sugar; bring to a boil and thicken with a starch slurry (starch 1 + water 2).
Pour the sauce over the stir-fry and serve with rice.