WebA solar term (or jieqi, simplified Chinese: 节气; traditional Chinese: 節氣) is any of twenty-four periods in traditional Chinese lunisolar calendars that matches a particular astronomical event or signifies some natural phenomenon.
Webhán lù 寒露. Oct 8th. The weather becomes cold enough to reach dew point, but not cold enough to reach frost point. Frost Descent. shuāng jiàng 霜降. Oct 23rd. The weather becomes cold and frost begins to form (in North China). Start of Winter.