Preparing Chinese Beef and Broccoli is straightforward. Just follow these simple steps:

1. Prep the Beef: Thinly slice the beef against the grain and place it in a bowl. Add 1 tablespoon of soy sauce and ½ tablespoon of cornstarch. Mix well and let it marinate for about 10 minutes.
2. Blanch the Broccoli: In a pot of boiling water, blanch the broccoli florets for 2-3 minutes until bright green and slightly tender. Drain and set aside.
3. Heat the Pan: In a large skillet or wok, heat the vegetable oil over medium-high heat.
4. Cook the Beef: Add the marinated beef to the pan. Stir-fry for about 2-3 minutes or until the beef is browned and cooked through. Remove the beef from the pan and set it aside.
5. Add Garlic and Ginger: In the same pan, add the minced garlic and ginger. Stir-fry for about 30 seconds until fragrant.
6. Combine Ingredients: Return the beef to the pan along with the blanched broccoli.
7. Make the Sauce: In a bowl, mix the remaining soy sauce, oyster sauce, black pepper, and beef broth. Pour this mixture into the pan. Stir well to coat the beef and broccoli.
8. Thicken the Sauce: Add the remaining cornstarch mixed in a little water to the pan. Stir until the sauce thickens, approximately 1-2 minutes.
9. Serve Hot: Once everything is well combined and heated through, remove from heat.

These simple steps will guide you to create a delicious dish to impress your family and friends.