Dice the onion, carrot, potato, and green onion.
Cut the beef into bite-sized pieces.
Add cooking oil to a pot and stir-fry the beef.
When the meat is cooked, add the vegetables and konjac and stir-fry.
Add water, soy sauce, sugar, and cooking wine, and bring to a boil.
Simmer over medium-low heat until the potatoes are tender.