Preheat oven to 110C.
In a shallow ovenproof pan, heat sesame oil over a medium heat.
Grate the ginger directly in and saute for 10 seconds.
Add the Five Spice powder and toast for 10 seconds.
Stir in the brown sugar.
Pour in the light soy sauce, dark soy sauce and Shaoxing wine.
Cook until sticky and shiny.
Add the ribs to the pan, and stir over the heat to coat each rib in the sauce.
Cover the pan with foil and bake for 3 hours in the oven.
Increase the heat to 180C and remove the foil. Bake the ribs uncovered for another 15-20 minutes, until the sauce has reduced and the ribs are slightly charred on the edges.
Serve, garnished with spring onions.