Cut the beef and vegetables into bite-sized pieces.
Marinate the beef with soy sauce, minced garlic, and black pepper.
Heat oil in a pot and stir-fry the beef.
Add vegetables (carrot, potato, onion, broccoli, etc.) and stir-fry together.
Add water, soy sauce, sugar, and cooking wine.
Cover and simmer over low heat for 20 minutes.
When the vegetables and meat are tender, transfer to a plate.