Is the number of lines in calligraphy layout generally an odd number?

No. Chinese calligraphy is a long-established art of writing Chinese characters. It evolved from oracle bone inscriptions, stone drum inscriptions, and bronze inscriptions (Zhongding inscriptions) to large seal script, small seal script, and official script, to cursive script, regular script, running script, etc. that were finalized in the Eastern Han, Wei, and Jin Dynasties. The number of lines of calligraphy layout It is usually plural, rarely appears in singular form, and is arranged in a vertical column.