1. Prepare vegetable ingredients.
2. Slice the beef against the grain, marinate it with cornstarch, salt, ginger, and light soy sauce for a while.
3. Heat the oil in a pan until it is six mature, pour in corn oil, and quickly stir-fry the beef on high heat until it is six mature and remove.
4. Leave the bottom oil in the pot and stir-fry the green peppers over high heat.
5. Pour water spinach stems into high heat and stir-fry until six mature.
6. Add beef and tomatoes, mix together and stir-fry for 2 minutes.
7. Add a pinch of salt and stir-fry on high heat.
8. Serve, complete.
9. carry out.
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