Step 4
Heat a large wok over medium-high heat. Swirl in oil, then add scallions, garlic, ginger and salt; cook, stirring, until fragrant, 30 seconds. Add the pork; cook, stirring constantly, until just cooked through, 2 to 3 minutes. Add the squash threads and cook, stirring, for 1 minute. Add soy sauce, rice vinegar and chile sauce (or chile oil); cook, stirring constantly, until aromatic, about 30 seconds.