The constellation is determined by the date of the solar calendar, 1999 14. The date of the solar calendar on the day of the autumnal equinox is September 23rd, and the constellation of that day is Libra.
Lunar calendar: August of the Year of the Rabbit 14.
Main branch: Wuyin, a bazaar in Gui You.
Solar term: autumnal equinox
Gregorian calendar:1Thursday, September 23rd, 999 Libra
Source: Hua Wang.