What are the small pieces of wood thrown when burning incense for?

These two things you mentioned are called "cups", but they are actually very traditional divination things like cashew kernel. There are two * * *, one side is flat and the other side is convex.

It's best to light your own fire and incense. Now, in order to prevent fire, we can't burn incense in the main hall. When burning incense, light the incense with your own fire first. The more prosperous the better, people often say that incense is strong. If a flame appears, never blow it out with your mouth. Lift it up suddenly and the burning fire will go out. Left hand on top, right hand holding incense on the bottom.

Pay attention to divination:

When divining, first ask you the question you want to divine, and then throw it on the ground.

If one-on-one mistakes are different, it is the "holy grail", which means to identify with it. If both pieces are up, it means that the question is wrong, or the question itself is meaningless. If both pieces are convex, it is a "negative cup", which means negative opposition.