You can boil them together.
If possible, you can stir-fry the bean paste with ginger and the hot pot base first.
Homemade hot pot base:
Cut green onion into large pieces and set aside.
Skim some of the skin off the ginger and cut it into large pieces.
Select a good star anise, anise do not choose to have more than eight angles.
Prepare good quality seaweed, try to choose the dry and fluffy ones, the bigger ones are good.
If you like chili peppers, you can prepare a small amount of dried chili peppers.
Put all the above ingredients into the hot pot pot, you can also add a few more jujubes and goji berries.