Cut the chicken breast into bite-sized pieces.
Prepare potatoes, carrots, and onions into easy-to-eat sizes.
Heat cooking oil in a pan and stir-fry the chicken breast.
When the chicken breast is halfway cooked, add the prepared vegetables and stir-fry together.
Add soy sauce, sugar, minced garlic, pepper, and water, then bring to a boil.
Simmer over medium-low heat until the chicken breast and vegetables are fully cooked.
Add green onion and glass noodles, then simmer for another 2-3 minutes.