What's the name of a good fortune-telling ancient book?

Xuan Tong Zhen Jing is Wen Zi. In the first year of Tianbao, Emperor Xuanzong of the Tang Dynasty (742), Wen Zi was named as a real person in Xuan Tong, and Wen Zi was regarded as the true sutra of Xuantong. Taoism was regarded as one of the true sutras of the Four Gentlemen. In the Northern Wei Dynasty, Li Xian called Ji Ran Wen Zi in Wen Zi. Wen Zi was born in the Spring and Autumn Period and belongs to the Taoist system. He wrote Wen Zi. Xuanzong of Tang Dynasty is euphemistically called Xuantong Zhenjing, which is one of the four classics of Taoism. Liu Zongyuan began to doubt its falsity and has been questioning it for thousands of years. 1973, a large number of bamboo slips were unearthed from the Han Tomb at No.40 Bajiaolang Village, Dingxian County, Hebei Province, including the book Wen Zi. This case has just ended.