What weather does "July filariasis" mean?

"July Fire" comes from the Book of Songs, national style and folk customs. July filariasis, September clothes.

The so-called "filariasis" is explained on page 952 of the concentrated edition of Ci Hai: "Fire, the name of the star, is the heart. Every year in the summer calendar, the heart stays in the sky at dusk in May, and it gradually goes west after June. The heat in summer began to decline. " In addition, Confucius said: "Those who travel westward in July are also the stars of fire, and they know that the cold is getting colder." It can be seen that "July fire" is related to solar terms and climate, but it is by no means a word to describe the heat. Therefore, Yu Guanying's selected translation of The Book of Songs is more concise: "After dusk in autumn, the great Mars sets in the west, which is called' filariasis'".

"July" refers to July in the summer calendar; "Flow" refers to moving and falling; "Fire" refers to the star name "Big Mars" (not Mars orbiting the sun), that is, the heart.

"Big Mars" is a famous red giant star, which can emit lux light. It is located in the south, and it is the highest in the evening of May every year in the summer calendar. On the evening of July in the summer calendar, the position of Mars gradually descended from the sky to the west. "Go to Qiu Lai in the summer." People call this phenomenon "July filariasis".

Therefore, the real meaning of "July fire" means that in July of the summer calendar, the weather gradually turns cold, and at dusk, you can see big Mars falling from the west.