Spring equinox of national wind and solar terms

"July" means not July in the solar calendar, but July in the lunar calendar. In the lunar calendar, January, February and March represent spring, April, May and June are summer, July, August and September are autumn, and October and December are winter, so July in the lunar calendar is the season from summer to autumn.

The real meaning of "July fire" means that the weather turns cold in July of the lunar calendar, and just after dark, you can see the big Mars falling from the west.

It is worth noting that due to the slow motion of the vernal equinox, the "filariasis" mentioned in the era of the Book of Songs more than 2,000 years ago is now observed in the Central Plains, about August of the lunar calendar.

"July filariasis" has another meaning:

The "fire" of "July filariasis" refers to big Mars. Mars is a big planet, and big Mars is a star. It is the brightest star in Scorpio, also known as Antares in ancient China. It is a famous red giant star, giving off lux light, hence its name.

"Flow" is a verb, which refers to the westward movement and setting of stars.

I hope I can help you solve your confusion.