Marinate beef with all the marinating ingredient. Set aside for 30 minutes. (note: I have a 9-minute marinator machine so I did this for only 10 minutes)
Cut the hard stems of chinese broccoli.
In a wok, bring water to a boil. Add ginger slices and 1 teaspoon sesame oil.
Blanch the Chinese Broccoli for 1 minute.
Transfer the blanched Chinese Broccoli to a serving plate.
Remove the water/sesame oil/ginger mixture from the wok.
Heat the olive oil in wok.
Add marinated beef, oyster sauce and sesame oil and mix the ingredients.
Cook quickly for 1 minute then place the cooked beef on top of the blanched chinese broccoli.
serve and enjoy!