Heat the Oil: In a large saucepan, heat 1 tablespoon of cooking oil over medium heat until shimmering. Add the ground beef, breaking it apart. Sauté for 5-7 minutes, until it's slightly browned.

Add Ginger and Soy Sauce: Once the beef is cooked, stir in 1 tablespoon of grated ginger and 3 tablespoons of soy sauce. Cook for 10-15 seconds until fragrant.

Simmer the Sauce: Pour in 1 cup of water and sprinkle in 1 teaspoon of white pepper. Bring to a simmer, cover, and cook for about 10 minutes.

Prepare the Noodles: Cook the vermicelli noodles according to package instructions, usually for 3-4 minutes. Drain and rinse under cold water.

Thicken the Sauce: In a small bowl, mix 1 tablespoon of corn flour with 1/2 cup of water until smooth. Stir into the beef sauce and cook for another 2-3 minutes until thick.

Combine Noodles and Beef: Add the cooked vermicelli noodles to the thickened sauce, tossing to coat evenly. Cook for another 2 minutes.

Garnish and Serve: Remove from heat and sprinkle with chopped spring onions. Serve hot, with optional dark vinegar and chili oil.