Taiwanese pork belly over rice

Ingredients

• 3 1/2 oz cooked short-grain rice
• 1/2 lb pork belly
• 2 bok choy
• 3 scallions
• 1 hard boiled egg
• 3 slices ginger
• 2 cloves garlic
• stick cinnamon
• 1 star anise
• 1 bay leaf
• 1 black cardamom pod
• 5 tbsp dark soy sauce
• 2 tbsp miso paste
• 2 1/2 cups water
• 4 tbsp neutral oil (divided)
• salt
• pepper
• sugar