Chop green onion into small pieces, about 1/2 cup.

Dice 1 tomato into bite-sized pieces.

Beat 3 eggs with a pinch of salt until well mixed.

Heat cooking oil in a pan, pour in the beaten eggs, and stir gently until partially cooked. Remove eggs and set aside.

Add more cooking oil to the pan and stir-fry the chopped green onion until fragrant.

Add diced tomato and 1/2 tbsp soy sauce to the pan. Stir-fry until the tomato softens.

Return the partially cooked eggs to the pan, add 1 tbsp oyster sauce, and stir-fry until everything is well combined.