Birthday, is the constellation according to the China lunar calendar or the foreigner solar calendar?

In the past, the countryside was based on the lunar calendar. To be exact, the lunar calendar should be more accurate, because the solar calendar is different every year. Now this era is basically based on the constellation of the solar calendar, and birthdays are calculated according to the solar calendar. If you are the lunar calendar number 10.20, you can find out what the solar calendar number is in the lunar calendar number 10.20 of the year in which you were born, and then your future solar calendar birthday. Constellations are all based on the solar calendar. Look up the solar calendar on your birthday, and you can change your birthday to the solar calendar to commemorate it.