Heat a medium pot over medium-high heat with a couple of inches of oil in it. Take the frozen chicken strips out of the freezer to thaw just enough to break them apart.
Meanwhile, whisk the sauce ingredients together and set it aside to allow time for the flavors to come together.
Tear the vegan chicken strips into thirds that are about an inch long. If they are still too frozen to break, heat them in the microwave for 15 seconds. You can cut the strips if you prefer, but tearing them helps to create more jagged edges for the breading to hold onto.
Mix the rice vinegar, 2 tablespoons of soy sauce, salt, white pepper, and ginger together in a large bowl. Coat the vegan chicken pieces by gently stirring them into this liquid mixture. Now that the pieces are moistened, add the cornstarch to the bowl and gently toss to fully coat them.
Check to make sure the oil is between 325-350°F. Then drop a few pieces in at a time. Let them fry for 2-3 minutes until they turn a light golden brown. Use a skimmer to lift them out of the hot oil, shake the excess oil off, and then place them on a cooling rack.
While the pieces are cooling, warm the sauce over medium-low heat until it starts to bubble. Pour the sauce over the vegan chicken and stir the pieces around until they are all fully coated in the sauce.