Beef and Broccoli noodles

Name: Beef and Broccoli noodles
Cuisine: Asian, Chinese
Ingredients: Marinade; 1 lb thinly sliced sirloin; 3 tbsp light soy sauce; 1 tsp salt; 1/2 tsp black pepper; 1/4 tsp baking soda; 1 tbsp cornstarch; 1 tbsp neutral oil; Sauce; 1/2 cup soy sauce; 1 tbsp oyster sauce; 1 tbsp sugar; 1 tsp sesame oil; 1 cup chicken broth or beef broth; 1 tbsp cornstarch