The Autumnal Equinox is one of the earliest solar terms. High skies, pale clouds, cool dew, fresh winds. Discover fun facts with Tiangong Kaiwu.秋分，古人最早确立的节气之一。天高云淡，露冷风清。趣闻不少，随《天工开物》一探究竟。 #Xinyu# #NewChapterOfJiangxi# #CharmOfJiangxi#