Cut carrots into thin slices and broccoli into bite-sized pieces, then blanch in boiling water for 2-3 minutes. Drain and set aside.
In a pan, heat oil and saute scallops until 70-80% cooked.
Add mushrooms, oyster sauce, light soy sauce, 200ml of water and let it simmer over low heat for 2-3 minutes. Add more water if the pan starts to dry up.
Add Hua Diao Wine, salt and sugar to taste, then pour in the cornstarch solution a little at a time to thicken the gravy. Once gravy is thickened to your liking, remove from heat.
Plate the ingredients by lining the outermost of the plate and working your way to the middle - starting with broccoli, carrots, mushrooms and scallops.