Yongshen, a special term used in the traditional Chinese four-pillar and eight-character prediction technique, specifically refers to the heavenly stems or earthly branches used to remedy the shortcomings of the eight-character prediction. The so-called Yong Shen is one of the five elements in the Bazi that has the function of remedying disadvantages or promoting success for the Rigan.
Therefore, if you want to predict blessings and misfortunes based on the Bazi, Yong Shen becomes the One of the necessary steps.
But some people say that fortune telling can be done without using gods.