What grade is solar term song in Chinese book?

24 solar terms and Song in the new curriculum standard version of the second grade Chinese book P9 1 page.

The full text is as follows:

Spring rain surprises spring and bright valley days, and summer is full of mans and summer heat is connected; Autumn dew, autumn frost, little snow in winter and cold in winter. There is no change in the two festivals every month, with a maximum difference of one or two days; The first half of the year is June 2 1 day, and the second half is August 23.

The 24 solar terms are: beginning of spring, Rain, Sting, Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoxia, Daxia, beginning of autumn, Early Summer, Bailu, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.

Twenty-four solar terms originated in the Yellow River Basin. As early as the Spring and Autumn Period, the ancient sages of China set four solar terms: midsummer, midsummer, midsummer and winter solstice, which were continuously improved and perfected in the future. By the Qin and Han Dynasties, the solar terms had reached 24? The solar terms have been completely established. In 104 BC, Emperor Wu of the Han Dynasty, at the suggestion of Sima Qian and others, ordered the calendar to be changed, and instructed taichu calendar, Luo and others to formally set 24 solar terms in the calendar, and made clear the astronomical position of the 24 solar terms.