175px: Anshenxiang: Burning time: about 30 minutes. 350px: health incense: burning time: about 65 minutes.
Linear fragrance is fragrance without bamboo core, also called straight fragrance and grass fragrance.
It consists of aggregate, adhesive, perfume, pigment and auxiliary materials.
It appeared as early as the Song and Ming Dynasties, and the linear incense burned for a long time, so it was also called "immortal incense" or "immortal incense".
In ancient times, common temples used the length of incense as the unit of time measurement. So it is also called "Xiangcun".