Mince garlic.
Peel the skin off of the Chinese eggplants leaving spaces in between. This helps maintain the shape of the eggplant and ensures that this dish is not too mushy.
Slice eggplant in 2 inch pieces.
Make sauce by mixing cornstarch, water, sugar, soy sauce and oyster sauce. Set aside.
Heat pan with oil on medium heat. When the pan is hot, add your eggplant and grill on sides until golden brown (takes 3-4 minutes).
Add some more oil in the pan. Then, add your minced garlic and chili oil. Mix everything together for 1 minute.
Then, add your sauce you made earlier (step 3) into the pan. Cook for 3 or more minutes, the eggplant should soften. If you like it softer, cook it longer.
Garnish with sliced green onions, thai chilis (optional), and sesame seeds. Serve with white rice!