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I don't quite follow what this is referring to. If anyone with a better understanding of it knows a good link to link that to, that may be helpful for other users. I'm thinking Solar term since that's what comes up on the Pentad "disambiguation" page and seems most fitting, but this article (Lidong#Pentad) seems vague enough that it's not quite clear and could use a bit more context. PolymathGirl ( talk) 22:52, 9 October 2017 (UTC) reply

I'm not an expert on Chinese solar terms but I find this subtitle confusing as well. The equivalent subsection in the Chinese page is name 物候, literally "phenology" . It appears the character 候 has an additional meaning of "pentad" in the sense of a 5-days period. Thus there are 72 pentads a year, 3 pentads per solar term. So maybe this section was called this way due to a mistranslation of 物候? I'd change it but I'm chicken. Also this appears in pages on other solar terms. DC. 77.126.125.232 ( talk) 19:55, 9 February 2021 (UTC) reply