Add the chicken, ginger, green onions, salt and pepper in a pot with water. Bring it to a boil.
Cover and cook until the chicken is tender. Remove the chicken into a bowl and shred using two forks.
Transfer to a pan with oil, soy sauce and brown sugar.
Cook on medium-low heat for about 15 minutes, stirring occasionally to prevent burning.
Take off heat, allow to cool down and shred a bit more using your fingers.
Serve immediately or store for later.
Notes
Don't get rid of the poaching liquid- it is actually quite flavorful, and you can use it as a base for your soups.
I really love the texture that I achieved by shredding the chicken with two forks. If you prefer a finer texture, you can use a stand mixer to shred the chicken.
A dash of fish sauce can also lend a beautiful flavor and aroma to the chicken floss.