Cut the pork into bite-sized pieces.
Slice onion, green onion, and carrot thinly.
Mix gochujang (Korean red chili paste), soy sauce, sugar, minced garlic, sesame oil, and red pepper powder to make the seasoning sauce.
Add the seasoning sauce to the pork and mix well. Marinate for 10 minutes.
Heat cooking oil in a pan, sauté the green onion to enhance aroma.
Add the pork and vegetables to the pan and stir-fry over medium heat.
When the pork is fully cooked, serve on a plate.