Gregorian calendar signature: September 29th, 20 10
Inscription of the lunar calendar: the year of Geng Yin is the year of Gui Yue Xia Huan (20 10 is the year of Geng Yin, September 29th is the 22nd day of the lunar calendar, and the August of the lunar calendar can be called Mid-Autumn Festival, Gui Yue, Zhengqiu, Bimonthly, Guiqiu, etc., and each month is divided into three rings, the lower ring refers to the 21st to 30th), or it can be directly designated as the Mid-Autumn Festival in the year of Geng Yin.
Gregorian inscriptions can clearly record the creation date of a work, so many contemporary calligraphers push this move.
Of course, learning ancient calligraphy can get its charm, and the lunar calendar is still the first choice for many calligraphers.