What are the incense burner stalks and dust-avoiding stalks in The Father of the Magic Way?

The stalk of incense burner is: After everything was calm, Wei Wuxian lived in Gusu, and he and Lan Wangji were inseparable. One day, two people took a nap. Lan forgot that the incense burner in the machine room was surrounded by these clouds. How can I tell? For a long time, it became a spiritual thing. The fragrance brought Wei Wuxian and Lan Forgot to an empty world together.

It turned out that the incense burner received the dream of Wei Wuxian and Lan Forgetting Machine in the incense burner, and brought it in to see the dream of Lan Forgetting Machine at the age of 16. In the library, Wei Wuxian scared Lan to forget her mobile phone with erotic pictures, and both cartoons and TV series were filmed.

Dust-proof stalk: The original text reads: "Wei Wuxian stared at him with interest, shook the dust-proof stalk in his hand, lowered his eyes, kissed it gently on the dust-proof stalk, then leaned out a bright red small tongue and licked it carefully on the stalk."