Chiyambi cha autumn ndi nthawi ya khumi ndi itatu ya dzuwa la "Twenty-Four Solar Terms" ndi nthawi yoyamba ya dzuwa m'dzinja. Dou amatanthauza kum’mwera chakumadzulo, dzuŵa limafika pa 135° ecliptic longitude, ndipo limakumana pa August 7 kapena 8 pa kalendala ya Gregorian chaka chilichonse. Kusintha kwa chilengedwe chonse ndi njira yapang'onopang'ono. Chiyambi cha autumn ndi pamene yang qi imachepa pang'onopang'ono, yin qi imakula pang'onopang'ono, ndipo yang qi imasintha pang'onopang'ono kukhala yin qi. M'chilengedwe, zonse zimayamba kukula kuchokera pakukula mpaka kumdima komanso kukhwima.

Chiyambi cha autumn sichikutanthauza kutha kwa nyengo yotentha. Chiyambi cha autumn chikadali nthawi yotentha, ndipo chilimwe sichinatuluke. Nthawi yachiwiri ya dzuwa m'dzinja (kumapeto kwa chilimwe) ndi chilimwe, ndipo nyengo imakhala yotentha kwambiri kumayambiriro kwa autumn. Zomwe zimatchedwa "kutentha kuli mu ma volts atatu", ndipo pali mawu akuti "volt imodzi pambuyo pa autumn", ndipo padzakhala "volt imodzi" ya nyengo yotentha kwambiri kumayambiriro kwa autumn. Malinga ndi njira yowerengera ya "San Fu", tsiku la "Liqiu" nthawi zambiri limakhalabe pakatikati, ndiko kuti, chilimwe chotentha sichinathe, ndipo kuzizira kwenikweni kumabwera pambuyo pa nthawi ya dzuwa ya Bailu. Madzi otentha ndi ozizira si chiyambi cha autumn.

Ikalowa m'dzinja, imasintha kuchoka kumvula, chinyezi ndi kutentha kwachilimwe kupita ku nyengo yowuma komanso yowuma m'dzinja. M'chilengedwe, yin ndi yang qi imayamba kusintha, ndipo zinthu zonse zimachepa pang'onopang'ono pamene yang qi ikumira. Kusintha kodziwikiratu m'dzinja ndi pamene masamba amachoka kubiriwira wobiriwira kupita kuchikasu ndikuyamba kugwa masamba ndipo mbewu zimayamba kukhwima. Chiyambi cha chilimwe ndi chimodzi mwa “nyengo zinayi ndi zikondwerero zisanu ndi zitatu” m’nthaŵi zakale. Pali mwambo pakati pa anthu wolambira milungu ya m’dzikoli ndi kukondwerera zokolola. Palinso miyambo monga "kumata mafuta a autumn" ndi "kuluma kwa autumn".