Boil the quail eggs, remove the shells and set aside.
Meanwhile, put oil in a pan under medium heat and saute pork until it becomes brown/ish. Move the pork in one side of the pan and saute onions and garlic in the same pan until translucent and aromatic. Add in black pepper, salt, oyster sauce and pork cubes.
Add a little bit of water and add in the veggies that are harder to cook like carrots, baby corn, chayote,snap peas, green and red bell peppers. Simmer for 2-3 minutes.
Then add in the broccoli, cauliflower, and cabbage. Simmer for 1 minute.
Thicken the sauce by adding a tablespoon of cornstarch to 1/2 cup of water and add to the pan and mix it all together. Simmer for 1 more minute and you are done.
Transfer to a serving dish and top with the boiled quail eggs. Enjoy!