For the marinade

1. Take a bowl and add in the egg white, dark soy sauce, rice vinegar, sugar and salt. Whisk well. Add in the boneless diced chicken pieces and mix well to coat. Top the mixture with all purpose flour (maida), corn starch and baking powder. Combine well to coat the chicken pieces. Marinate the chicken for atleast 30 minutes to an hour.

Deep Fry

1. Heat oil in a pan until hot. Slide the marinated chicken pieces one by one in oil. Fry till golden and crisp. Remove the pieces once they are golden and drain it on paper towels.

For the Panda Express Orange Chicken Sauce

1. Take a bowl and add in the minced garlic, minced ginger, red chilli flakes, orange juice, dark soy sauce, rice vinegar, sugar, tomato ketchup and salt. Whisk well to form a sauce.
2. Take a wide pan and bring it to heat. Add in the sauce and let it simmer for five minutes till syrupy.
3. Add in the fried chicken pieces. Gently toss to coat for a minute. Add in the finely chopped spring onions and toss for one last time.