Take the boneless chicken cubes or chunks in a bowl and marinate with salt and pepper for 10 minutes.
Later heat oil in a wok or pan and stir-fry the chicken pieces.
Once done, add soy sauce to the chicken pieces and toss quickly and keep aside.
Again heat oil in the pan, now add the whisked eggs and scramble them with little bit of salt. Once done, take the scrambled eggs out of the pan and keep aside.
Next heat remaining oil in wok and finely chopped onions.
Once they turn translucent, add chopped beans, cabbage and carrot and sauté for few minutes. Add salt to taste and mix well.
Now add the cooked rice and mix well with veggies.
Finally, add fried chicken cubes and scrambled eggs into rice and give a good mix.
In a separate bowl, combine the vinegar and soy sauce and stir into the rice.
Now add chopped spring onions and lightly mix them. Chicken Fried is ready to serve.