"The ancient Chinese divided the sun’s annual circular motion into 24 segments. Each segment was called a specific ‘Solar Term’. The element of Twenty-Four Solar Terms originated in the Yellow River reaches of China. The criteria for its formulation were developed through the observation of changes of seasons, astronomy and other natural phenomena in this region and has been progressively applied nationwide. It starts from the Beginning of Spring and ends with the Greater Cold, moving in cycles. The element has been transmitted from generation to generation and used traditionally as a timeframe to direct production and daily routines. It remains of particular importance to farmers for guiding their practices. Having been integrated into the Gregorian calendar, it is used widely by communities and shared by many ethnic groups in China. Some rituals and festivities in China are closely associated with the Solar Terms for example, the First Frost Festival of the Zhuang People and the Ritual for the Beginning of Spring in Jiuhua. The terms may also be referenced in nursery rhymes, ballads and proverbs. These various functions of the element have enhanced its viability as a form of intangible cultural heritage and sustain its contribution to the community’s cultural identity. Knowledge of the element is transmitted through formal and informal means of education."
Source: UNESCO Intangible Cultural Heritage.
Postcard 1 - Little Snow 小雪
Nice postcard of 小雪 Little Snow one of the 24 solar terms. Thanks to Wulifei of China.
Postcard 2 - Autumn center (Equinox) 秋分
Autumn center (Equinox) 秋分 is one of the 24 solar terms is mailed from Taiwan. Thanks to Maicy of Taiwan.
Postcard 3 - Summer Solstice 夏至
Summer Solstice 夏至"Xia Zhi" is the tenth of the 24 lunar terms in China and part of UNESCO Intangible Cultural Heritage. It marks the longest day and shortest night of the year - lotus bloom in Forbidden City, Beijing. Thanks to Edwin of China. Mailed on April 10, 2020 and arrived in Penang on June 10, 2020.
Postcard 4 - Dong Zhi 冬至
Dong Zhi 冬至 Winter poem postcard. Thanks to Yumi of Guangzhou, China. 
Postcard 5 - Frost Descent 霜降
A unique postcard of one of the Chinese 24 Solar Terms - Frost Descent 霜降 Mailed on October 23, 2022 which is Frost Descent Day. This Chinese 24 Solar Terms is a UNESCO Intangible Cultural Heritage. Thanks to Fu Ping of Beijing, China.
