Cut the beef into thin strips and paper towel off any excess moisture.
In a bowl, mix the flour and Chinese 5 spice, then add the beef and coat well
Heat a wok and fry the beef in small batches – turning only once if you can so it really crisps
Sauté the onion, carrot, garlic and ginger in the wok with some more cooking spray. When soft, add chillies, tomato purée, char Sui sauce, 5 spice, red pepper, and season. Add some hot water while cooking to keep from sticking and reduce down. Add the syrup once the peppers are soft
When the sauce is done, transfer the beef into the sauce and coat well, adding a squeeze of lime juice and some fresh coriander over the top