Prepare your ingredients. Slice the char siu pork into bite-sized pieces (See note 1).
In a small bowl, combine the light soy sauce, dark soy sauce, oyster sauce and Shaoxing wine, and give it a good mix.
Heat 1 tbsp of vegetable oil in a large wok or pan over medium-high heat. Add the garlic, ginger, spring onions, peas, and sweetcorn, and stir-fry for 2 minutes and then toss in the diced char siu and continue to stir-fry for another 2-3 minutes.
Push the ingredients to one side of the wok, add the beaten egg, and scramble them into small pieces as it cooks in the wok.
Then add the cooked cold rice to the pan. Break up the cold rice with a spoon and stir fry well to combine the rice with the vegetables and char siu pork.
Drizzle the soy sauce, oyster sauce and Shaoxing wine mixture over the rice, stir to coat evenly and toss everything together. Taste and adjust with salt and pepper. Cook for 3-4 minutes, stirring continuously to ensure even heating.
Serve hot in bowls, with an extra sprinkle of spring onions and chilli oil if you want it spicy.