Boil the quail eggs, peel, and set aside. Prepare all vegetables by washing, peeling, and cutting as needed.
Bring a large pot of water to a boil. Blanch the carrots, chayote, green beans, broccoli, cauliflower, snow peas, cabbage and young corn for 1-2 minutes each in the boiling water, then immediately transfer them in a bowl.
Heat 2 tablespoon of oil in a large pan or wok over medium heat. Sauté the garlic until fragrant, then add the onion and cook until translucent. Add the chicken breast pieces and cook until lightly browned.
Add the chicken liver and cook until browned and cooked through. Add the shrimp and cook until they turn pink.
Pour in 2 tablespoon of oyster sauce and two tablespoon of soy sauce. Toss and let it simmer.
Add 1 cup of water and let it boil. Then add 1 tsp of of black pepper powder.
In a bowl, dissolve the cornstarch in 1 cup of water to make a slurry then add it until the sauce thickens.
Add the bell pepper and stir-fry for about 1-2 minutes. Add the blanched vegetables and young corn to the pan and continue to stir-fry until all vegetables are heated through and crisp-tender.
Return the boiled quail eggs to the pan. Mix well with the vegetables.
Season with salt to taste.
Transfer the Chop Suey to a serving dish and enjoy hot with steamed rice.