Prepare the beef brisket, chewy noodles, and vegetables into bite-sized pieces.
Cut the soft tofu into appropriate portions and set aside.
Boil the chewy noodles in boiling water and rinse under cold water.
Heat some oil in a pan and stir-fry the beef brisket.
Add seasonings (gochujang, minced garlic, etc.) to the beef and stir-fry together.
Add the cooked noodles, soft tofu, and vegetables to the pan and stir-fry together.
Adjust the seasoning, plate the dish, and serve.