Cut the beef brisket belly into bite-sized pieces.
Slice the green onion and onion thinly, and chop the spicy green chili peppers.
Heat a pan and add a little cooking oil.
Add the beef brisket belly to the pan and stir-fry over high heat.
When the beef is about halfway cooked, add the green onion, onion, and chili pepper and stir-fry together.
Season with salt and pepper.
When all the ingredients are cooked, turn off the heat and place them on a plate.