Heat wok or large sauté pan over medium-high heat on stovetop. Add a tablespoon oil to wok. If using shrimp or chicken, add it now and stir fry until almost cooked through, a couple minutes should do it then transfer to a plate. If using BBQ pork or tofu, add it after the vegetables.
Add another tablespoon of oil to wok and heat. Add your assortment of vegetables, sturdy ones like carrots and turnips first so that they can cook a bit longer than more tender ones like scallions and peas. Stir fry a couple minutes then add the ginger, chile (if using), and garlic and cook another minutes or two.
Add back the shrimp or chicken or add the BBQ pork, or tofu. Add the cooked rice and stir gently to combine. Drizzle in soy sauce, sesame oil, and rice vinegar. Continue to stir fry/cook until protein is completely cooked and vegetables are just shy of tender.
Crack eggs into small bowl and scramble with a fork. Push wok ingredients up the sides and away from middle, and add a little oil. Add the eggs and cook for a couple minutes, until scrambled, then gently combine everything. Pass additional soy sauce, vinegar, and chile oil at the table.