According to folk sayings, heavy mourning has existed in the past history, and mourning and heavy mourning are also called taboo days among the people. There is a saying about heavy mourning: someone died of heavy mourning, and two coffins stood in front of the mourning hall. If more than two people count as days, it is a day of mourning, then this date is a day of mourning.
The method of determining the day of heavy mourning is as follows: seven consecutive times, eight times twice, eleven times five times, ten times four times, and six times are heavy mourning. In other words, the first month of Geng Day, July 1st; February Xin Day, August B Day; April 3rd,1October 30th; May Day, November Day; March, September, May, June and December. Become 7 Jia Geng, 28 Yi Xin, 40 C Ren, 5 1 Ding Gui, with heavy losses.