What days of the month does "Sanniang Killing Day" refer to?

Legend has it that because Yue Lao didn't hold the red line for San Niang, she couldn't get married for life. She took revenge and resolutely opposed Yue Lao, so she deliberately ruined the wedding of the couple. Therefore, it is not suitable to get married on the 3rd, 7th, 13th, 18th, 22nd and 27th of every month.

According to legend, if you get married on the day of "San Niang Sha", the bride will be very angry that day, so she will cover her head with red and hold a red umbrella when she gets married.

Sanniang Sha's formula: On the first three days, the third day, the seventh day, the thirteenth day, the eighteenth day, the last twenty-second day and the twenty-seventh day, you should do one thing to ensure that it is not prosperous, that men and women will not marry, that orphans and widows will not be paired, that the front of the courtyard is uninhabited, that you will lose your boat before the house is built, and that Shangguan will not return home when he takes office.

My friend, the above legends are all superstitions. We should get rid of superstition and carry forward science!