Cut eggplants into strips and soak them in salted water for 10 minutes. Drain and pat dry.
In a bowl, combine soy sauce, rice vinegar, and sugar. Set aside.
Heat vegetable oil in a pan over medium heat. Add eggplant strips and cook until soft and golden. Remove and set aside.
In the same pan, add garlic, ginger, and chili paste. Stir-fry for 30 seconds until fragrant.
Return eggplant to the pan. Pour in the soy sauce mixture and cornstarch slurry. Stir well to combine.
Cook for an additional 2-3 minutes until the sauce thickens and coats the eggplant.
Garnish with chopped green onions before serving.