Heat the oil in a large skillet over medium-high heat. Add the onion, carrots and celery and cook, stirring occasionally, until the vegetables have softened, about 5 minutes.
Add the chicken, garlic powder, ginger, white pepper, salt and hoisin sauce and cook, stirring occasionally, until the chicken is cooked through, about 5 minutes.
Remove the skillet from the heat and stir in the cilantro. Let cool slightly.
Lay a spring roll wrapper on a work surface. Place 2 tablespoons of the chicken filling in the center of the wrapper. Moisten the edges of the wrapper with the beaten egg.
Fold the bottom edge of the wrapper up over the filling, tucking it tightly against the filling. Fold in the sides, then roll up from the bottom until the top of the wrapper is reached.
Repeat with the remaining wrappers and filling.
Preheat an air fryer to 375°F (190°C).
Place the spring rolls in the air fryer basket in a single layer. Air fry for 5 minutes, until golden brown and crispy.
Serve warm.
Interesting Facts
Spring rolls are believed to have originated in China in the 2nd century BC.
The traditional Chinese name for spring rolls is chun juan.
Spring roll wrappers are made from wheat flour, water and salt.
Air-frying is a healthier alternative to deep-frying as it uses less oil.