What do you mean, "use red yarn for daily duty, but don't use it for big events"?

It means that this day is not suitable for doing big things and making decisions.

First of all, it is considered that Red Sand Day is the third day in Meng Yue, the day in the middle of the month, and the ugly day of the season and the month. That is: Shen Yin sees the fourth day in the fourth month, the first day on the meridian, and the ugly day in the morning. This is also what the almanac says.

Second, according to "Turn to God", Red Sand Day is Meng You, Zhong Si and Ji Chou. That is,1April 470 is "unitary", 25881/month is "four", and March 369 12 is "ugly". There is a saying: "Four Monks, Golden Rooster and Four Bell Snakes, four seasons are ugly and red sand."

Four days (and four days off-four days) is considered as a day of seasonal alternation among people, and all living things in the world should adapt to the seasonal changes. In the days when the four seasons alternate, people's behavior should conform to heaven, cultivate one's morality, adjust one's mood, rest at ease, and not concentrate. Therefore, it is recorded in ancient books that it is not feasible to have sex on the fourth day (also the fourth day), otherwise you will lose your life for three years at a time.

In addition, the traditional study of choosing a date also thinks that the wedding date should avoid four days (and four days off, four days off), because these days are at the time of the handover of solar terms, and the atmosphere of the universe is in a state of chaos and instability, so it is unlucky to get married at this time.