Mix the sauce: In a small bowl combine 2 tbsp light soy sauce, 1 tbsp oyster sauce, 1/2 tbsp flour and 1/3 cup water. Whisk thoroughly until the flour is completely dissolved and no lumps remain. Set aside next to the stove.
Whisk the eggs: Crack 3 eggs into a bowl and whisk until fully combined with no streaks of white remaining. Season with a small pinch of salt and set aside.
Cook the minced pork: Heat 1 tbsp cooking oil in a wide pan over medium-high heat. Add 100g minced pork, breaking it into small pieces. Pour in half the sauce mixture, season with black pepper to taste, and stir through. Cook until the sauce reduces. Remove from the pan and set aside.
Pan-fry the tofu and add the egg: Add the remaining 2 tbsp cooking oil to the same pan over medium heat. Gently place 200g silken tofu into the pan and let it sit undisturbed for 1-2 minutes t. Pour the whisked egg mixture evenly around and over the tofu. Spoon the cooked minced pork evenly over the top. Place the lid on immediately, reduce to low heat and steam for 2-3 minutes until the egg is just set with a slight wobble in the centre. Pour the remaining half of the sauce evenly all over. Remove from heat immediately.
Garnish and serve: Scatter finely chopped spring onion and red chilli over the top. Serve immediately straight from the pan with steamed white rice and spoon plenty of sauce over the rice as well.