In a wok or large frying pan on medium high heat, add cooking oil. Fry wonton wrappers in small batches until golden brown. Will take about 20-30 seconds each batch. Add more oil if needed. Place them on a paper towel lined plate and set aside. Remove any oil, leaving about 1 tablespoon.
Add beef, let sear on one side for one minute. Flip and sear the other side for one minute and stir fry until about 80-90% cooked through. Move the meat to the sides and let any liquid evaporate or simply pour it out.
Turn heat down to medium, add the onion and carrots and saute for 2-3 minutes. Add garlic and 1 teaspoon salt and cook for 30 seconds, until fragrant.
Add cabbage, soy sauce and oyster sauce. Stir well and cook for 1-2 minutes until the cabbage is wilted.
Add green onion, ground white pepper, sesame oil and chili oil, if using. Toss well.
Serve over individual bowls of rice.