Xiao Tianshu said with a smile: "We Chinese love, put it, write a mysterious book, attached to a god, it seems that today's people are not exempt from vulgarity!" ”

Nian Fu smiled: "Hehe, this is also normal, ordinary people can't write it, I always think that it was written by a fairy, for example, Xuan Chu, what she saw in her dreams was different from normal people, maybe in the eyes of these authors, these are nothing remarkable, these are exactly what he usually sees!" ”

Xiao Tianshu said with a smile: "That's right, what Yu Chu sees, it's still things, ordinary people, even a few lifetimes, and it can't be seen even if it consumes merit, here is her chance, and it's also her innate mission......"

Nian Fu said: "Since the book of Bu Tiange is so awesome, then tell me, isn't there a second difference in this book?" ”

Xiao Tianshu said: "The second is that the starry sky division of the three walls and twenty-eight houses is a new idea, in the history of Chinese astronomy, the "Danyuan Zibu Tiange" pioneered the use of the three walls and twenty-eight nights of the starry sky division method, that is, the stars near the North Pole are divided into Ziwei, Taiwei and Tianshi three walls, and the rest belong to the twenty-eight houses, and the starry sky of the whole day is divided into 31 regions. As we all know, the origin of the 28 Nakshatras in ancient Chinese astronomy is very early, and there are records of "the position of 20 with 8 stars" and "the number of 20 with 8 stars" in the "Zhou Li". In 1987, in the tomb of Marquis Yi of the early Warring States period excavated in Suixian, Hubei, there is a lacquer box with a lacquer lid that writes China's 28 houses. However, the early names of the 28 Nakshatras only indicated individual constellations, and the 28 Nakshatras system was originally used by the ancients as a sign of the sun, moon, and the position of the five stars. ”

Nian Fu was curious: "You said that this star is the name given by our ancient Chinese ancients, what does the name of this star constellation mean?" It can't be where the stars live, right? ”

Xiao Tianshu said with a smile: "This su, read xiu" and "stay", "Shuwen" cloud: "Stop, breathe by cut". "宿" is pronounced xiù here, and the times are also. Second, there is also the meaning of dormitory. The "Twenty-eight Nakshatras" are literally interpreted as twenty-eight nakshatras, each of which serves as a place of abandonment for the planets. The ancients thought that the sun, moon, and five stars were constantly going back and forth in the infinite sky, and it was difficult to grasp the laws of their movements, so they conceived that according to the position of the celestial sphere of the stars, the celestial sphere would be divided into a certain starry sky area, that is, the starry sky near the ecliptic and celestial equator would be divided into 28 starry sky regions, which was 28 nakshatras. Taking the Twenty-Eight Sutras as the main body of the starry sky division, it began with "Dan Yuanzi Butian Song". The division of the 28 Nakshatras is based on the 28 Nakatras, which divide the sky into 28 regions. Each constellation has a certain constellation as a fixed sign, and the ancients used it to observe the laws of the movement of the seven political constellations, and to determine the seasons of the year, as well as good and bad. ”

Nian Fu smiled: "Hahaha, this is really easy to understand, although the stars are xiu, but I am the same as I imagined, it is where the stars live!" ”

Xiao Tianshu said with a smile: "The twenty-eight constellations are: the seven Nakshatras in the East (Canglong) are the horns, Kang, Di, Fang, Heart, Tail, and Kei, a total of forty-six constellations. Northern Seven Houses (Xuanwu): Fighting, Bull, Female, Void, Danger, Room, Wall, a total of 65 constellations; The Seven Western Houses (White Tiger): Kui, Lou, Stomach, Pleiades, Bi, Mi, and Shen, with a total of 54 constellations; The Seven Houses of the South (Suzaku Bird): Well, Ghost, Willow, Star, Zhang, Wing, and Zhen, there are a total of 42 constellations. Let's take the Seven Houses of the East as an example to illustrate a little. There are eleven constellations in Jiaosu, namely: Jiao (also known as Chenjiao, a total of two stars), Pingdao (a total of two stars), Tiantian (a total of two stars), Jinxian (one star), Zhou Ding (a total of three stars), Tianmen (a total of two stars), Ping (a total of two stars), Kulou (also known as Tianlou, a total of ten stars), Zhu (also known as five pillars, a total of eleven stars), Heng (a total of four stars), South Gate (a total of two stars). There are six constellations of Kang, namely: Kang (four stars in total), Dajiao (one star), Zhewei (also known as Seven Folds Wei, a total of seven stars), Seti (six stars in total), Dun Yan (two stars in total), and Yangmen (two stars in total). There are eleven constellations, namely: Di (also known as Tiangen, Tianfu, a total of four stars), Tianru (one star), Zhaoyao (one star), Terrier River (three stars), Emperor Xi (also known as the emperor's seat, a total of three stars), Kangchi (a total of four stars), Riding Officer (a total of ten stars), Array (a total of three stars), Che Riding (a total of three stars), Tianhui (also known as Tianfu, a total of two stars), and the general of the cavalry array (one star). There are seven constellations in the house (there is another hook for the attached seat), namely: Fang (also known as Tiansi, Matsu, Nongxiang, a total of four stars), Hook (also known as Jin, a total of two stars), key closed (one star), punishment (also known as the star, a total of three stars), two salts (a total of eight stars), day (one star), Congguan (a total of two stars). Antares has two constellations, namely: Heart (also known as fire, fire, a total of three stars) and Jishu (a total of twelve stars). There are five constellations (another shrine is an attached seat), namely: Tail (also known as Jiujiang, a total of nine stars), Jingu (one star), Tianjiang (a total of four stars), Turtle (a total of five stars), Fu Shuo (also known as Tiance, one star), and Fish (one star). There are three constellations in Keijuku, namely: Kei (also known as Nongwei, a total of four stars), bran (one star), and Pestle (a total of three stars).

Since the distribution of the 28 Pleiades in the sky is not uniform, the size of these 28 regions also varies greatly. The largest Ijuku occupies a range of more than 30 degrees of right ascension, while the smallest Ijuku and Onijuku have only a few degrees. Due to the precession, the distance between the houses varies from one time to the next. ”

Nian Fu looked at Xiao Tianshu and said: "By the way, when Chu was a child, she loved to look at the stars, and she looked at the stars when she sat in the yard, and she looked at the stars all over the sky very carefully, at that time I asked her what she was looking at?" Guess how she answered? ”

Xiao Tianshu smiled: "Really? Looking at her relationship with Sirius-kun, isn't she looking at Sirius? ”

Nian Fu smiled: "Hehehe, also look at Sirius, she said that her mother said that after people die, they will become the brightest star in the sky, she is looking for the star that belongs to her, which one is it?" ”

Xiao Tianshu's face was red for a while, and he said whitely: "This girl, how can people become stars, everyone is unique, these stars all look the same, where can they represent people, it is really a child's childlike words, anything can be imagined, and his imagination is also very rich, he was such a cute child when he was a child, hehe, hehe......"

Nian Fu thought to himself, this kid, his mouth is really tight, he can't get his words out like this, this guy is really a good disciple who is tight-lipped, he must know some of Xuan Chu's life experience or something, otherwise, why is he so embarrassed when he said these words just now! Laughing and laughing so cramped?