Place the noodles in a heatproof bowl. Cover them with boiling water. Set them aside for 5 mins or until the noodles separate. then drain off any excess water from the noodles.
Meanwhile, heat the oil in a wok over a high heat. Add the chicken and stir-fry, stirring with a wooden spoon to break up any lumps, for 9-10 mins or until lightly browned. Add the carrot, capsicum and garlic and stir-fry for 2 min.
Add the curry powder and stir-fry for 2 min or until fragrant. Add the oyster sauce, soy sauce, noodles and 125ml water. Stir-fry for 2 mins or until well combined. Add the peas, choy sum, wombok and spring onion and stir-fry for 1-2 mins or until wombok just wilts.