The ingredients needed are: cabbage, onion and two tomatoes. Wash the cabbage, cut off the old roots, and then break it into large pieces by hand. Heat oil in a hot pot. Add onion and garlic and stir-fry until fragrant. Then stir-fry the tomatoes, and when the tomatoes stir-fry the juice, stir-fry the cabbage in the pot. Stir-fry cabbage until soft, then season with salt. It is best to put salt before cooking, and stir well before cooking.