Cook the noodles in a pan of boiling water for 2-3 minutes, until al dente, or according to packet instructions. Drain, then rinse under cold running water and drain again. Drizzle with a dash of toasted sesame oil and toss through to prevent the noodles from sticking to each other.
Put the chicken strips in a bowl and season with a dash of light soy sauce, the five spice powder and chilli sauce if using. Mix well, then lightly dust with corn flour.
Heat a wok until smoking and add the rape seed oil, then add the chicken and stir fry for 3-4 minutes, or until the chicken is golden-brown and cooked through.
Add the red pepper, mushrooms and ginger, with any seasonal vegetables and stir fry for 1 minute.
Add the bean sprouts and spring onion and stir fry for 30 seconds.
Stir in the cooked noodles and season with the soy sauce, a dash of toasted sesame oil andfreshly ground black pepper.
Pile onto a serving plate and serve immediately.