Heat a generous amount of oil in a wok and stir-fry the meat for 2-3 minutes over high heat. Set aside immediately while the meat is still pink, trying to keep oil in the wok
Put the eggs in the wok still over high heat, wait 30 seconds for them to solidify a bit and mix to get shreds (set aside in the same container as the meat, to save on dishes)
Stir-fry the garlic and white parts of the spring onions for 2 minutes
Add the white parts of the bok choy and cabbage as well as the onion, stir-fry for 2-3 minutes
Add the green parts of the bok choy and cabbage, stir-fry for 1-2 minutes
Add the rice and stir-fry for 2-3 minutes
Add the sauces, mix well and stir-fry for 2-3 minutes
Add the meat and eggs, mix for 2 minutes
Turn off the heat and add the green parts of the spring onions and mix. Serve immediately
Notes
Use a quick-cooking cut of beef like sirloin or rump steak