Add the sliced mushrooms stir-fry for about 2 minutes, lightly browning the edges.
Add in the noodles and stir-fry allowing the noodles to lightly brown in spots, about 2 minutes, tossing occasionally.
Add garlic, ginger and scallions to the noodles, and continue stir-frying for about 30 seconds or until fragrant, making sure not to burn.
Add cooked pork and pour sauce mixture over; toss with tongs to combine until heated through and coated with sauce.Transfer to a serving dish and serve immediately.