"In the eighteenth year of Taiyuan, the guest star was at the end in spring and February, and it was destroyed in September." What star is this?

"In the spring and February of the eighteenth year of Taiyuan, the guest star was at the end, and it was absolutely in September." This is the guest star at the end.

In 386 AD, during the Wu Rebellion, Volume 25 of the Book of Songs, one of the Twenty-four Histories, recorded that the guest star was at the end: "In the spring and February of the eighteenth year of Taiyuan, the guest star was at the end and died in September". Shine for 8 months on the turbulent land of China. Only China has recorded these three supernovae, and all of them have found suspected remains, which provide valuable historical materials for human astronomical research.

China has a civilization history of 5,000 years and a prosperous farming civilization history. Rulers of the unified dynasties of past dynasties need to hire full-time secretaries and Qin (Qin) secretaries, signed by officials, who are responsible for observing astronomy and calculating calendars. Division was used in the Ming Dynasty, and later it was changed to Qin. In the Qing dynasty, the official position was in the Ming dynasty and still belonged to Qin Tianjian. ) Observing astronomical phenomena, calculating solar terms, making calendars, guiding agricultural production, and being responsible for recording and interpreting abnormal astronomical phenomena, so there are abundant records and documents of abnormal astronomical phenomena in ancient China.