How to pronounce Pinyin with Pinyin 40 in solar term song?

Solar term song's pronunciation in pinyin is as follows:

Spring rain surprises spring and bright valley days: ch ū n y ǔ j and ng ch ū n q and ng g ǔ ti ā n.

Summer is full, summer is full, summer is summer, summer is summer: xi

Autumn dew, autumn cold and frost fall: qi CHLùqi Han Shuāng Jiang.

Snow in winter and cold in winter: not ng Xu

The pinyin of forty is pronounced: sì shí.

Twenty-four solar terms originated in the Yellow River Basin, and as early as the Spring and Autumn Period, four solar terms were defined: mid-spring, mid-summer, mid-autumn and mid-winter. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established. In BC 104, Deng Ping's taichu calendar officially set 24 solar terms in the calendar, and defined their astronomical positions.

The time required for the sun to travel from zero degrees along the ecliptic to 15 degrees is called a solar term. It runs 360 degrees every year, and * * * experiences 24 solar terms, twice a month.

Among them, the first solar term of each month is 12 solar terms such as beginning of spring, Jingzhe, Qingming, Changxia, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Cold Dew, beginning of winter, Heavy Snow and Xiaohan, and the second solar term of each month is neutral, that is, rain, vernal equinox, Grain Rain, Xiaoman, summer solstice, Dashu and so on. ?

24 solar terms reflects the annual apparent movement of the sun, so the date of solar terms is basically fixed in the current Gregorian calendar, with the first half of the year being 6th and 2 1, and the second half being 8th and 23rd, with a difference of 1 to 2 days.