There are 3744 volumes. During the Kaiyuan period of the Tang Dynasty, during the reign of Emperor Xuanzong of the Tang Dynasty (7 13 ─ 74 1), Shi Chong Xuan and other 40 people wrote down all the classics, sounds and meanings. On this basis, he sent messengers to search for Taoist scriptures everywhere, and the original collection compiled Taoist scriptures, which were called Sankong and Qionggang, with a total of 3744 volumes (5700 volumes and 7300 volumes), called Kaiyuan Taoist Scriptures. The compilation style of Kaiyuan Daozang adopts three-hole classification, which is divided into three holes and thirty-six parts, namely twelve parts of cave truth, cave mystery and cave god. In the seventh year of Tianbao (748), imperial edicts were widely circulated. In the late Tang and Five Dynasties, it was destroyed by fire. After the establishment of the Song Dynasty, Taoist scriptures were collected and sorted out five times and rebuilt. Song Zhenzong himself believed in Taoism and compiled 4,359 volumes of Bowen Lu Tong in six years. Zhang Junfang was ordered to compile the Collection of the Heavenly Palace in the Great Song Dynasty, with a volume of * * * 548 1, which was first published in Fujian County, Fuzhou, and was called Wanshou Daocang or Zhenghe Wanshou Daocang. Later, he sent Zhang Junfang, a Taoist priest, to add 4,565 volumes to the book, in thousands of words. In the third year of Tianxi (10 19), it was compiled into seven volumes, which were named "Tiangong Collection of the Great Song Dynasty". During the period of Chongning in Song Huizong, it increased to 5387 volumes, which was called Chongning Re-school Collection. During Zheng He's reign, it was added to volume 54,865,438+0, which was printed by block printing and called Zheng He Wanshou Taoist Collection, which was the beginning of woodcut Taoist Collection. Rulers of Zhang Zong, edited the treasure of Jin Xuandou, * * * six thousand four hundred and fifty-five volumes. In the early years of Yuan Dynasty, Quanzhen Taoist Song presided over the compilation of Da Yuan Bao Dian, with a total of more than 7,800 volumes. In the Yuan Dynasty, these Taoist scriptures went through the chaos of war, burning books and burying Confucianism, and had long since disappeared. The existing ones are the Orthodox Collected Taoist Scriptures published in the 10th year of Zheng Tong in the Ming Dynasty (1445) and the Wanli Continued Collected Taoist Scriptures printed in Zhang Guoxiang in the 35th year of Wanli (1607). The existing Taoist Collection was edited and arranged by the 43rd Shi Tian Zhang Yuchu and his younger brother Zhang Yuqing in the 4th year of Yongle. In the ninth year of English Orthodoxy, Shao Yizheng, a real person in Miao Tong, was ordered to make corrections and supplements, and was published in the tenth year of Orthodoxy, with a total volume of 5,305. Later generations called his book "orthodox Taoist scriptures" according to the year of publication. In the thirty-fifth year of Ming Shenzong Wanli, Shi Tian Zhang Guoxiang, 50 years old, was ordered to edit the book "Continued Collection of Taoist Scriptures". "Continued Collection of Taoist Scriptures" contains 5485 volumes of Taoist Scriptures 1476 kinds, and is divided into 5 12 letters, each of which is numbered according to the order of thousands of works, with a total of 12589 volumes. All kinds of classics in Daozang are arranged according to the classification method of "three points and four auxiliary points".