What do you mean by the thirteenth day of the first month and the fifteenth day of July in a year?

The 13th day of the first month is the anniversary of Pepsi's death in the lunar calendar, and the 15th day of July is regarded as Ghost Festival. Therefore, "the year is most afraid of the 13th and 15th of the first month".

First, the 13th day of the first month:

Old customs and superstitions begin on the thirteenth day of the first lunar month, and then two days in advance every month will be Pepsi taboo day.

On the 13th day of the first month, the calendar stated that it was the anniversary of Yang Gong's death, and everything was inappropriate. It is said that Yang Jiajiang went to war on the 13th of the first month and lost seven generals. He thinks this day is unlucky, and then it will be passed down from generation to generation as a memorial.

The algorithm of Yang Gong's death date is based on the 13th day of the first month, and then it goes back two days every month, such as February 1 1 day, March 9th ... and suddenly changed in August, starting from 27th.

Retire for two days every month, such as September 25th,1October 23rd ... In the first month, there was a sudden change, starting from 13.

Second, July 15:

Mid-Autumn Festival, that is, the ancestor worship festival in July and a half, is also called Shigu Festival, Ghost Festival, Solitary Festival and Local Officials' Day. Festival customs mainly include ancestor worship, setting off river lanterns, worshipping the dead and burning paper ingots. Mid-Autumn Festival evolved from the ancient "July and a half", harvesting crops in autumn and offering sacrifices to ancestors.

July and a half is a festival to celebrate the harvest and repay the earth in early autumn, and some crops have matured. According to the law, people should worship their ancestors and report Qiu Cheng to them with new rice. It is a traditional cultural festival to commemorate ancestors, and its cultural core is to respect ancestors and filial parents.