In a large bowl, add in sweet soy sauce, light soy sauce, oyster sauce, salt and pepper then add in the chicken. Marinate for a minimum of 10minutes
In a wok, add in some oil and deep-fry the marinated chicken on high heat for 2 minutes, and turning before reducing the heat to medium for a following 3 minutes
Turn the chicken occasionally to ensure browning on all sides. Remove the chicken and drain on a kitchen towel.
Do not disregard the left-over marinade, add in 1 cup of water, dark thick soy sauce and corn flour and mix
Discard most of the oil in the pan but retain about 1 tblsof oil and stir fry chopped up garlic before adding the chicken in to the pan and pouring the access marinade into the pan.
Serve immediately with steamed rice