Nian Fu said: "Bu Tiange? Is it a book? ”

Xiao Tianshu said: "Yes, Butiange is actually a book, a book of heaven......"

Nian Fu was shocked: "I'll go, do people in this world really have a book from heaven to say this?" "If there were, wouldn't ordinary people have to look at it, let alone those of us who are cultivators.

Xiao Tianshu said: "Hehe," Butian Song is actually a work that introduces the ancient Chinese all-day star officials in the form of poetry, and there are many versions of it; The earliest version began in the Tang Dynasty, and the most well-known is Zheng Qiao's version of Tongzhi Tianwenluo, which is called Danyuanzi Butiange. ”

Nian Fu smiled and said, "Hehe, All-Heaven Star Officer? In other words, there are star officials in the entire sky? In that case, it's really a heavenly book......"

Xiao Tianshu said: "Yes, there are many versions of the existing "Butian Song", and the words are different. Today's Pan Nai took the "Four Preparations" book "Tongzhi Tianwen Luo", the "Ten Links" book "Literature General Examination", the Qing Kangxi School Yuan to Yuan engraved the supplementary edition "Jade Sea", the Wenjin Pavilion book "Siku Quanshu", "Lingtai Secret Garden", the Beijing Library collection of the Ming carved book "Dry Elephant Map", the Zhejiang Library special collection of Peng's Zhisheng Daozhai manuscript "Astronomical Ghost Materials", the Shanghai Natural History Museum collection of the Ming edition "Butian Song" (Ming Dynasty Li Zhizao collection), the "Series of Books" Mei Wending's "Examination of the Similarities and Differences of the Chinese and Western Classics", and the Fang Engraving "Ten Thousand Laws Return to the Ancestors" and the "Butian Song" in the Ming Yongle manuscript "Astronomical Secret Exam Preparation", "determine the correct and false, assess the similarities and differences, select the stars, and proofread them", and proofread a relatively complete "Butian Song" book. This book is used to discuss the new ideas of Taoist astronomy in the "Butian Song", and Dan Yuanzi compiled the steps of the stars of Zhou Tian into a seven-character long song according to the constellations determined by Chen Zhuo, which is called "Butian Song". ”

Nian Fu said: "There are many books that introduce this aspect, compared to the old Xingzong, Bu Tiange, what is the advantage of this book?" ”

Xiao Tianshu said: "His unique astronomical thought mainly has the following two points: 1. The astronomical thought of "stepping into the sky to know the stars" ......"

Nian Fu said: "Step to the sky to know the stars, when do you have to step to the sky to see the stars?" ”

Xiao Tianshu said: "The biggest feature of Butian Song is that it introduces the 283 officials and 1464 stars summarized by Chen Zhuo with simple words and rhythmic songs. For example: East (one of the seven houses) Jiaosu: the north and south stars are really hanging, there is a flat road on the Tiantian, there are always black stars connected to each other, and there is a black name Jinxian. The right side of the flat road is alone, the top three stars are Zhou Ding, the corner is under the Tianmen left flat star, both cross on the library floor. The ten stars of the library building are bent and bright, the five pillars and fifteen stars in the building, and the three and two phases are like a tripod. Among them, the four-star alias Heng, and the two stars outside the South Gate Tower. (The dot added in the text is the name of the star, the same below) north (one of the seven houses) wall house: under the two stars is the thunderbolt, the thunderbolt five stars are horizontal, and the clouds and rain are second to the four directions. On the wall, the heavenly stable is ten round yellow, next to the iron five-star feather forest, and the two black walls of Tugong are hidden. Arctic Ziwei Palace, a book for Ziweiyuan (one of the three walls): Zhongyuan Arctic Ziwei Palace, the five stars of the North Pole are among them, the second pearl of the emperor, the third star of the concubine, the first is the prince, and the fourth is the harem five heavenly hubs. The left and right four stars are four auxiliaries, and Tianyi Taiyi is the doorway. The left pivot and the right pivot clamp the south gate, and the camp guards on both sides are fifteen. The left pivot of the Eastern Domain is connected to Shangzai (one is the second lieutenant of Shangzai), Shaozai is the second Shaofu, the second is the second Shaofu, the Shangwei Shaowei is the second Shangcheng, and the back door is east of the Dazan Mansion. The second lieutenant of the right pivot of the Western Domain, the upper auxiliary and the fourth assistant, the upper guard and the seventh young guard (one for the east of the door is called a young man), but the number of the front door. There are two yellow gatherings in the Yin De Gate, and Shangshu is the fifth in the second place. There is one family in the history of the female history pillar, and the royal girl has four stars and five heavenly pillars. Dali two stars Yin De side, hook Chen tail refers to the North Pole. Before the six stars of Liujia Gou Chen, the emperor was alone in Gou Chen. Between the back door of the inner seat of the five emperors, the canopy and the bar 16 stars, the bar is like a canopy shape, and the cover is connected with nine stars. The name is Fu Hanru Lianding. ”

Nian Fu said: "Ziwei Xingyuan, isn't that the residence of Emperor Ziwei?" ”

Xiao Tianshu said: "It is Zi Weixing's residence, with six beads on the left and right outside the wall, and the inner step and the left heavenly kitchen on the right. The eight stars in front of the stairs are named eight grains, and the kitchen is five days long. The six-star left pivot of the heavenly bed is right, and the inner kitchen is two-star right. Wenchang Dou is half-moon-shaped, sparsely divided with six stars. Under Wen Xing, he said that the three divisions, Taizun only showed to the three princes. The six-star Taizun side of the heavenly prison, the front of the four potentials of the sun's defense. On the sun side of a prime minister, there are three males to the west, that is, Xuange is a star circle. The four stars of Tianli are dark, and the auxiliary stars are close to the sun. The Seven Stars of the Beidou Residence, the first main emperor is named Shujing, the second and third Xuanji stars, the fourth and fifth Heng, and the six or seven Kaiyang Shake Light. Shake the left three days and shoot brightly. Each sentence in the existing "Butian Song" is also equipped with a star map, which is omitted. Judging from the content of the above excerpt of "Butian Song", "Butian Song" adopts the form of catchy song formula, which vividly and vividly records the name, number of stars and location of the star official. The advantage of this is that people read the song of Butian, just like walking along the stars in the sky and among the stars in the sky. The whole song is well-organized and easy to remember. ”

Nian Fu said: "How to walk in the sky among the stars, this is good, so romantic, when I have a phoenix mount like Chu in the future, I must go to the sky to walk among the stars, play, by the way, how did the person who wrote the book write?" ”

Xiao Tianshu said: "For example, we only need to know a star A first, and then go east from star A to star B, or go south to star C. In this way, by reciting the charming song and walking one by one in the direction, you can identify the constellations of the whole day. The idea of this step of celestial knowledge of the stars is very advanced and convenient, so "Dan Yuanzi Bu Tiange" became widely popular as soon as it came out, and became a must-read for beginners in astronomy. Zheng Qiao, a historian of the Song Dynasty, once observed the stars with the help of Butian Song, and said: "One day, you have to recite Butian Song." There is no moon in autumn, and the sky is as clear as water; Recite a long sentence, gaze at a star, count the nights, and the stars in a day, all in x? Selected "Mei Wending, a famous celestial arithmetic in the Qing Dynasty, also highly praised "Butian Song", cloud: "There are pictures in the sentences, and the images are seen under the words, or half or about, and there is no loss." Since the Song Dynasty, the Butian Song has been highly valued and is regarded as the most authoritative record of describing the stars. Moreover, because of the great role of "Butian Song" in the transmission of astronomical knowledge, so that since Song Zhengqiao's "Tongzhi Astronomical Strategy", it is often regarded as a secret art, which can only be recited on the Lingtai, and it is strictly forbidden to introduce it to the people. ”

Nian Fu smiled and said: "I'll go, I think the author who wrote the book must have experienced the stars in the sky like this, otherwise how could he give up all the mysterious things, or this book is not ......written by mortals at all."