What is yarrow divined by the ancients?

In ancient times, yarrow was used for divination, and yarrow was mountain grass or straw. In the future, divination will use bamboo chips, also known as yarrow or hay, and later tortoise shells. yarrow is a perennial erect herb in Compositae, which is more than three feet high, with alternate pinnate veins, white flowers in summer and autumn, withered in late autumn and regenerated in spring. It is said that this kind of grass can grow for thousands of years and has hundreds of stems, which is the longest among herbs. Therefore, the stems of yarrow are very straight. Because yarrow naturally has eight white lines and eight edges on its stem when it is mature and eight corners when it is cut, it is also called "Bagua grass". Interestingly, in western culture, the flower language of yarrow is "comfort", and divination is actually seeking psychological comfort! At this point, the eastern and western cultures seem to be interlinked. Now, there are a large number of yarrow gardens in Taihaoling.