"Xin Chou Xia Yue" is an inscription form commonly used by calligraphers. Inscriptions can be written as "Xin Chou Xia Yue" and "Xin Chou Xing Yue". 202 1 is an ugly year, so the year should be written in front. "Xia Yue, Xingyue" and so on are all nicknames of summer, which makes more sense.