To make the dressing: Combine ginger, soy sauce, sesame oil, rice vinegar, chilli powder and sugar in a large bowl and set it aside.
Heat a wok or large frying pan over a high heat. Add oil and when it is shimmering, add pork and cook it for 2 minutes, moving it around the pan all the time. Add onion, broccoli, snow peas and chilli. Combine and continue to cook the stir-fry until the pork is just cooked through.
Remove pan from the heat. Place pork and vegetables in a bowl with the dressing and toss to combine. Serve the stir-fry on top of a bed of the rice, garnish with spring onion.