How to use bones for divination in ancient times

In ancient times, divination was made of bones. Look at the cracked lines on the bones after burning them. This is divination. There are many methods of divination. Accounting is to infer results through mathematics. Divination is a divination method after Zhouyi, which uses a certain number of divination grasses to make predictions. In modern times, it is almost embarrassing to draw lots to sign poems in temples. This is the category of mysticism, psychiatry and idealism, and it has its reasons. For example, the wind horn technique in history evolved into plum blossom easy number, which belongs to divination. Plum blossoms are easy to count, and the fake bracket was invented by Shao Kangjie.