Cut the cabbage and chili peppers into bite-sized pieces.
Heat cooking oil in a pan and stir-fry the beef brisket.
When the brisket is partially cooked, add the cabbage and chili peppers and stir-fry together.
Season with soy sauce, oyster sauce, sugar, and minced garlic.
Serve the stir-fried ingredients over rice to make a rice bowl.