Cut the chicken into bite-sized pieces.
Prepare the marinade with gochujang (red chili paste), soy sauce, sugar, and other seasonings, then coat the chicken well.
Prepare vegetables and other ingredients such as cabbage, sweet potato, and rice cake.
Add oil to a pan and put in all the ingredients.
Stir-fry everything evenly over medium heat.
When all the ingredients are cooked through, it's ready to serve.