How to write calligraphy in a few years?

Calligraphy inscriptions are generally written according to the traditional chronological method, not the year number. For example, this year, you can write "Wu Jianian Autumn xx Book". Write spring, summer, autumn and winter in the month, specifically adding "early spring", (Meng Chun), "midsummer", "late autumn", (late autumn) and "spring month". For example, Xia Meng Qigong Book in the Sino-Japanese War.