Is the first bow down the same as the first bow down?

Chufu and Fu Tou are not the same thing. Chufu is a statement about the calendar, which refers to the third Geng day from summer to the future, and the first day of the dog days usually refers to the day before the third Geng day from summer to the fourth Geng day.

The first day of the first stage of the hot season, that is, from summer to the third watch in the future, is the first day of crouching.

Fu Tou, the first day of three ten-day periods in hot season, usually refers to the day before the third Geng day from summer to the fourth Geng day. Also known as "Fu Tou".

Generally speaking, in the "dog days", the average temperature is the highest in the "middle range". Of course, this calculation method of the ancients is not very scientific, and it is not necessarily closely combined with the meteorological reality of that year. The extreme maximum temperature in all parts of the year does not necessarily appear in the "middle volt" or even "three volts".