1Preheat oven to 220°C.
2Sprinkle the Chinese powder over the meat side of the pork and rub in. Sprinkle the salt.
3Place the pork into the baking tray, and put into the oven. Let it bake for about 25mins. After that time decrease the temperature to 160°C and roast for another 1 ½ hours.
4Add 1 ½ litres of water into a large pot over medium heat, place the ginger, garlic, chillis, star anise, peppercorns, shaoxing wine and soy sauce and bring to the boil.
5Reduce to a gentle simmer and cook covered for about 50mins.
6Place the pak choi and shallots into the bowl and pour the broth over the vegetables and add the pork as well on the top.