What is the theme of viewing incense and fortune telling? Who is the master to answer?

Strictly speaking, fortune-telling by observing incense does not belong to any forecasting discipline, but only belongs to a folk algorithm, because no book has recorded fortune-telling by observing incense since ancient times. If it is astrology, palm reading, face reading, six-year-old children, and even blind people's fortune telling, there are well-documented books. Only watching incense and fortune telling is empty and lacks evidence. Belong to the folk generation, belong to face-to-face, not a faction.