Marinate beef for 30 minutes
Mix the sauce and set it aside
Fill wok with water, add sugar, oil and bring it to boil. Add Chinese broccoli and cook for a minute. Drain and set it aside.
Add more oil to the wok, add ginger, shallot and garlic, cook for a minute. Then add Chinese broccoli and cook for a minutes. Then return the beef and cook for another minute. Then add Chinese cooking wine. Constantly stirring and then add sauce. Wait until the sauce begins to thicken, then you can turn off the heat.