The "dry branch" method used to record the year of calligraphy works. "Dry" is "heavenly stem" and "branch" is "earthly branch". The so-called "dry branch" is the abbreviation of heavenly stems and earthly branches. Ten days' work is A, B, C, D, E, G, Xin, Ren and Gui. The twelve earthly branches are Zi, Ugliness, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. Using the combination of ten-day stem and twelve earthly branches to calculate the year becomes Jiazi, Ebou, Bingyin, Xinyou, Ren Xu and Guihai, with a 60-year cycle, commonly known as "60-year flower Jiazi". Please refer to the following table:
1, Jiazi, 2, Ugly B, 3, Bingyin, 4, Ding Mao, 5, Chen Wu, 6, 7, Wu Geng, 8, 9, Ren Shen, 10, Gui You, 1 17, and. 38, Xin Chou, 39, Ren Yin, 40, Gui Mao, 4 1, Chen Jia, 42, Yi Si, 43, Wu Bing, 44, 45, Wu Shen, 46, 47, 46.
The lunar calendar is divided into four seasons: spring, summer, autumn and winter, that is, February and March are spring, April, May and June are summer, July, August and September are autumn, and 10,1,1February is winter. In ancient times, the ranking order of brothers and sisters was Meng, Zhong and Ji (Meng Lao Da, Zhong Lao Er, Ji Lao San). Accordingly, Meng Chun, Midspring and Ji Chun are in April, May and June, Xia Meng, Midsummer, the last month of summer, July, August and September respectively. October, November and December are called the Winter Solstice, Midwinter and Ji Dong respectively. There are also nicknames for some seasons, such as Yangchun, Fangchun, Qingyang, Sunny, Yangzhong, Sanchun and Jiuchun. The nicknames of summer are Zhu Xia, Zhu Ming, Haotian, Changying, Sanxia and Jiuxia. The nicknames for autumn are Su Qiu, Qiu Jin, Shangqiu, Shang Jie, Su Shang, Su Jie, Jintian, Shang Gao, Sanqiu and Jiuqiu, and the nicknames for winter are Dong, Anning, Xuan Ying, Sandong and Jiudong.