Prepare the Sauce: In a bowl, combine soy sauce, oyster sauce, sugar, water, cornstarch, Shaoxing wine (optional), and sesame oil. Mix well and set it aside.
Steam the Eggplant: Heat a wok or non-stick skillet over medium-high heat. Add the eggplant and about 2 tablespoons of water. Cover and steam until slightly softened, about 3 minutes
Sear the Eggplant: Remove the cover and let the rest of the water evaporate. Add about 2 tablespoons of oil and sear until lightly browned but not mushy, about 3 minutes. Set aside.
Sear the Shrimp: In the same pan, add a bit of oil. Sear the shrimp quickly over high heat for about a minute on each side. Set aside.
Sauté the Aromatics: Lower the heat to medium-high. Add the garlic, ginger, and bird's eye chilies. Sauté until fragrant, about 30 seconds.
Stir Fry the Vegetables: Add the white parts of the scallions, red bell pepper, and onion. Stir fry until slightly charred, about a minute, tossing constantly.
Add the Shrimp, Eggplant, Scallions, and Sauce: Add the seared shrimp and eggplant, along with the green parts of the scallions and the prepared sauce. Be sure to give the sauce a quick stir to make sure the cornstarch hasn't settled at the bottom
Thicken the Sauce: Cook the sauce and let it thicken for about a minute while gently tossing them together. Add some ground pepper, then turn off the heat.