Fragrance, physiologically speaking, has the effect of calming the nerves and calming the soul. It is a good auxiliary cultivation product for people's state of mind. Tea ceremonies, playing the guqin, and often burning incense. Incense, religiously speaking, the so-called incense is used to worship gods and Buddhas, and it is a compulsory ritual. I often use sandalwood, so I will talk about it. Sandalwood can soothe the mind and generally comes in several forms. One type is made into strips, just like the kind that burns incense in temples, and is often used for worship; the second type is powder, usually burned in an incense burner, and these are used for meditation; the third type is pagoda incense, which has special characteristics when offering sacrifices. The purpose is like burning it day and night after people ascend to heaven; the fourth type is incense sticks. This kind of incense is the same as powder. It is lit when meditating, drinking tea, or playing the piano. The rising smoke in the incense burner makes people feel ethereal and peaceful.