Three-hole bead sac, ancient Chinese religious book. It was revised with the title "Lu Hai Yu Ke Wang Xuanhe of the Tang Dynasty". This book compiles the essence of 212 kinds of Three-Dong Taoism, hence the name "Three-Dong Bead Bag". Emperor Wu of the Northern Zhou Dynasty, Yuwen Yong, once ordered Taoist priest Wang Yan, who was a Taoist priest in the Taoist temple, to compile the three-hole sutra map. Wang Yan wrote seven volumes of "Three-hole Pearl Bag", which has been lost. Wang Xuanhe was a Taoist priest in the Tang Dynasty later than Wang Yan, but there is no record of his life, and the titles of the books he wrote are the same as those of the former. "History of the Song Dynasty·Yi Wen Zhi" and "Tong Zhi Lue" on the immortals and other sub-categories of Taoism are all recorded in thirty volumes. Today's "Zhengtong Dao Zang" Taiping section is in ten volumes and thirty chapters. The content is mostly based on ancient myths and stories and the deeds of Taoist priests before the Southern and Northern Dynasties. There are also collections on inner and outer elixirs and fasting ritual precepts. This book preserves many lost Taoist texts and is an important document for studying the history of Taoism before the Tang Dynasty.
