What month does Xia Yue mean? Common in ancient books.

Xia Yue refers to the fifth month of the lunar calendar, that is, the fifth month of the year, that is, the midsummer month. Judging from the 24 solar terms, the fifth month of the lunar calendar has reached midsummer, so it is called "midsummer" and "midsummer". The most important festival is the Dragon Boat Festival on the fifth day of May. Another name is Evil Moon, Heaven, Petty Punishment, Robbery, Jianwu and Pujie.

Source: Han Shu Yanzhu Biography by Ban Gu, a historian of the Eastern Han Dynasty: "Yue Xia Xia Xia, accompanied by cholera in Europe; If you don't adjust your troops to meet the enemy, there will be countless casualties. " In the fifth month of the lunar calendar, it is the hot summer, and plagues such as vomiting and diarrhea and cholera continue one after another. Don't wait for the battle, there must be many casualties.

Extended data:

The fifth month of the lunar calendar is also called "evil month": in some parts of northern China, folk customs believe that the fifth month of the lunar calendar is a poisonous month. Due to the great changes in nature and ecology after the summer, people have a lot of psychological fears, resulting in many taboos such as "covering your body, not being impatient, not being sexy again".

In fact, this is because the weather in summer is hot and dry, people are easy to get sick and plague is easy to spread, snakes and insects are easy to breed and bite people, so we should be very careful, which makes people gradually form the custom of "avoiding the five poisons" and "hiding from the Dragon Boat Festival".