Remove rice from fridge 15 minutes before cooking. Use a fork to break up any clumps until grains are separated.
Separate egg yolks from whites. In a large bowl, mix the yolks with the rice until every grain is coated and the rice turns pale yellow.
Heat 1 tablespoon oil in a wok or large frying pan over medium-high heat. Add sliced sausages and fry until slightly crispy, 2-3 minutes. Transfer to a bowl.
Add remaining tablespoon of oil to the pan. Add the egg yolk-coated rice and spread in an even layer. Let sit undisturbed for 1-2 minutes to crisp the bottom.
Toss the rice and continue cooking for 2-3 minutes, stirring occasionally, until heated through and glossy.
Push rice to one side. Add vegetables to the empty space and stir-fry for 1 minute to heat through.
Mix rice and vegetables together. Add the cooked sausages back. Season with salt and pepper to taste.
Turn off heat. Add chopped spring onions and toss everything together. Let residual heat wilt the spring onions for 30 seconds.
Serve immediately while hot, optionally topped with a fried egg or your favourite condiments.