Remove bones of the chicken thigh, washed and sliced, put in a bowl, pour 1 spoon of light soy sauce, 1 spoon of dark soy sauce, 1 spoon of oyster sauce, 1 spoon of pepper, 1 spoon of sugar, 1 spoon of corn starch, 1 spoon of sesame oil; stir well and marinate for at least 30 minutes.