Chicken in oyster sauce is a popular Chinese stir-fry dish that features tender chicken pieces cooked in a savory and flavorful oyster sauce. The chicken is marinated in a mixture of soy sauce, cornstarch, and sesame oil, then stir-fried with vegetables and oyster sauce. The result is a delicious and satisfying dish with a perfect balance of sweet, salty, and umami flavors. Serve it over steamed rice or noodles for a complete and hearty meal.