Chiyambi cha autumn ndi nthawi ya khumi ndi zitatu ya dzuwa ya "Twenty-Four Solar Terms" ndipo nthawi yoyamba ya dzuwa mu autumn. Dou amatanthauza kum'mwera chakumadzulo, dzuwa limafika 135° ecliptic longitude, ndipo limakumana pa Ogasiti 7 kapena 8 pa kalendala ya Gregory chaka chilichonse. Kusintha kwa chilengedwe chonse ndi njira yopita pang'onopang'ono. Chiyambi cha autumn ndi nthawi yosinthira pamene yang qi imachepa pang'onopang'ono, yin qi imakula pang'onopang'ono, ndipo yang qi imasinthasintha pang'onopang'ono kukhala yin qi. Mu chilengedwe, chilichonse chimayamba kukula kuyambira kukula mpaka kukhala chopanda mphamvu komanso chokhwima.

Chiyambi cha autumn sichikutanthauza kutha kwa nyengo yotentha. Chiyambi cha autumn chikadali mu nthawi yotentha, ndipo chilimwe sichinatuluke. Nthawi yachiwiri ya dzuwa mu autumn (kumapeto kwa chilimwe) ndi chilimwe, ndipo nyengo imakhala yotentha kwambiri kumayambiriro kwa autumn. Chomwe chimatchedwa "kutentha kuli mu ma volt atatu", ndipo pali mwambi wakuti "volt imodzi pambuyo pa autumn", ndipo padzakhala "volt imodzi" ya nyengo yotentha kwambiri pambuyo pa autumn. Malinga ndi njira yowerengera ya "San Fu", tsiku la "Liqiu" nthawi zambiri limakhalabe pakati, ndiko kuti, chilimwe chotentha sichinathe, ndipo kuzizira kwenikweni nthawi zambiri kumabwera pambuyo pa Bailu solar term. Madzi otentha komanso ozizira si chiyambi cha autumn.

Pambuyo polowa m'dzinja, imasintha kuchoka ku nthawi yamvula, yachinyezi komanso yotentha kupita ku nyengo youma komanso youma m'dzinja. Mu chilengedwe, yin ndi yang qi zimayamba kusintha, ndipo zinthu zonse zimachepa pang'onopang'ono pamene yang qi ikumira. Kusintha koonekera kwambiri m'dzinja ndi pamene masamba amasintha kuchoka pa zobiriwira kupita ku zachikasu ndikuyamba kugwa masamba ndipo mbewu zimayamba kukhwima. Chiyambi cha nthawi yophukira ndi chimodzi mwa "nyengo zinayi ndi zikondwerero zisanu ndi zitatu" m'nthawi zakale. Pali mwambo pakati pa anthu wolambira milungu ya dzikolo ndikukondwerera zokolola. Palinso miyambo monga "kumatira mafuta a nthawi yophukira" ndi "kuluma kwa nthawi yophukira".