Mawu achi China 24 a solar, kalendala yachikhalidwe yomwe imagawa chaka m'magawo 24, ndikuwonetsa modabwitsa za ulimi komanso kusintha kwanyengo ku China. Mwa mawu awa, "Chiyambi cha Autumn" (立秋, Lìqiū) imakhala ndi malo apadera, kuwonetsa kusintha kuchokera ku kutentha kwanyengo yachilimwe kupita kumasiku ozizira a autumn. Mawu awa nthawi zambiri amakhala pafupi ndi Ogasiti 7 kapena 8 chaka chilichonse, kutengera kalendala ya dzuwa.