Mix the beef thoroughly with its marinade and let it sit at room temperature while preparing the other ingredients. Wash the Chinese broccoli and chop into 2 inches / 5cm pieces. If the stalks are too thick, cut them lengthwise in half or thirds
In a separate bowl, mix all the sauce ingredients with a whisk or fork and set aside.
Prepare the noodles by carefully separating them by hand. If they're too hard, zap them in the microwave for 10 to 20 seconds. Set noodles aside for later.
In a large wok or deep frying pan, heat 2 tbsp of oil over high heat and once the oil starts to smoke, put in the beef. Create a single layer of beef at the bottom of the pan for even frying, then leave it untouched for 2 to 3 minutes before sauteing. Saute the beef until it's fully cooked, then transfer onto a plate, and set aside.
Wipe the same wok clean, then heat over medium high heat with the remaining 2 tbsp of oil. Quickly saute the garlic for about a minute until fragrant, being careful not to burn it. Add in the Chinese broccoli and saute for 2 minutes or until slightly wilted.
Push the broccoli to one side of the wok and add the eggs. Scramble the eggs, and once semi cooked, add in the noodles and sauce. Toss the noodles, taking care not to break them as much as possible. Once the noodles have softened, toss in beef and cook until heated through. For some noodle char, increase heat to high and leave noodles to cook untouched for 1 to 2 minutes. Pad see ew is best served immediately to prevent soggy noodles.