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Grain Rain (谷雨) is the sixth of the Twenty-four Solar Terms in the traditional Chinese calendar, which falls on April 20 this year. As the last solar term in spring, this period sees the temperature rise and rainfall increase, creating a good environment for plants and animals. Grain Rain is still linked with modern agriculture. It links grain with rain, reflecting an increasing amount of rainfall, which is good for the growth of crops. For farmers, it is a good time to sow.
It might not be so well-known that in Chinese tale an actual “grain rain” was recorded in the story of Cang Jie, who invented the first Chinese characters (汉字). Cang Jie created a set of characters from observing the tracks of birds and mammals. After his great invention, grains started to pour down from the sky.
The Grain Rain Day has become a day to honor Cang Jie and the invention of the Chinese language, and April 20 has been designated as the annual UN Chinese Language Day since 2010. Chinese characters are a treasure of the spiritual homeland of Chinese people, the thousands of years of Chinese culture, and an important symbol of cultural identity.
| Grain Rain, the Last Solar Term in Spring | |
| The date | The Grain Rain Day this year falls on |
| The temperature | It sees the temperature rise and rainfall |
| The origin | An actual “grain rain” |
| The | They are a treasure of the spiritual homeland of Chinese people and an important |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
