At first; men and women chiseled them in stone or steel. Later on; individuals have handwritten and dispersed this news in public discussion boards or read through them from scrolls by city criers. Designed someplace about 202 BC; these ended up “palace studies or imperial bulletins” distributed by the government https://www.dailypioneer.com/2016/state-editions/cs-lauds-new-efforts-for-upliftment-of-farmers-by-bisa.html