You don't need to blanch the sliced lotus roots for frying. Soak them in white vinegar for a few minutes to prevent the lotus root slices from discoloring and becoming crispy.
Minute green onion leaves, cut ginger into small pieces, peel lotus root and cut thin slices;
Soak lotus root in white vinegar for 5 minutes to avoid discoloration; heat oil in a pot and stir fry green onion and ginger slices;
Pour slices of lotus root into the pot and stir-fry; add water while frying and pour slowly.
When the fried lotus root slices are somewhat transparent and not firm, sprinkle salt and stir well;
Sprinkle the scallion leaves into the pan and mix well.