Complex sentence: The incense oil is placed into the container and bamboo reeds are then placed into the same container to absorb some of the incense oil and help carry its scent and essence out of the container and into the surrounding air.
Split into simpler sentences: The incense oil is placed into the container and bamboo reeds are then put into the same container. This is done to absorb some of the incense oil and help carry its scent and essence out of the container and into the surrounding air.