Calligraphy is about what is mourning years.

The ancients used heavenly stems and earthly branches as the serial number of year, month, day and time. This calendar formed by the "cadre branch discipline" is called the cadre branch calendar. Tiangan: A, B, C, D, E, Ji, G, Xin, Ren and Gui; Dizhi: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. Ten branches and twelve branches form sixty basic units in turn, and there is no "gold" in the twelve branches, so the year written in your work is definitely not.