Place noodles in a heatproof bowl. Cover with boiling water. Set aside for 6-7 mins or until tender. Refresh under cold water. Drain. Use kitchen scissors to cut into 10cm lengths. Return to bowl.
Add pak choy, radish, cucumber, mint, coriander, salmon and peanuts. Gently toss to combine.
Place the oil, lime juice, ginger and chilli in a screw-top jar and shake to combine. Drizzle over the salmon mixture. Toss to combine. Serve sprinkled with fried shallots.