Combine the **oyster sauce**, **fish sauce**, **soy sauce**, **dark soy sauce**, and **sugar** in a small bowl to make the stir-fry sauce.
Heat the **oil** in a wok or large skillet over **high heat** until it begins to smoke slightly.
Add the **garlic** and **chilies**, stir-frying for about 30 seconds until fragrant but not browned.⏱ 30 sec
Add the **ground chicken** and cook, breaking it into small pieces, until it is fully opaque and cooked through.
Pour the prepared sauce over the chicken and stir-fry for 1 minute until the liquid reduces and coats the meat.⏱ 1 min
Turn off the heat and immediately toss in the **Thai basil** leaves, stirring until they are just wilted.
Serve immediately over steamed jasmine rice, ideally topped with a crispy fried egg.