There are two explanations for not breaking ground in leap year. First, there is a leap month in the lunar calendar, and it is not allowed to break, change or move the tombs of civil houses within one year. First, there is a leap month in the lunar calendar, which is a leap month. You can't build a tomb, change it or move it in that month.
Funeral geomantic omen emphasizes heavy mourning. What is heavy mourning? The formulas for heavy mourning are "even seven consecutive years, one Geng, two eight and one Xin Dang, etc." That is to say, it is a day of mourning to meet A in the first month, G day of mourning in July, B day of mourning in February and Xin day of mourning in August. /Because the first month was built as Yin, the underground branch was hidden in Jiagan, and it was built as Shen in July, and the underground branch was hidden in Genggan. Mao was built in February, and the ground branches were hidden in Ganb, and Mao was built in August, and the ground branches were hidden in Xingan. This is the same as the Japanese intervention in the construction of the moon and the earth, and it is also repeated for the sky. Repetition means starting over. In funeral geomantic omen, repetition means killing people. Therefore, with the support of the moon and the ground, getting involved in daily work is like a heavy funeral.
Therefore, it is not appropriate to bury, move graves or break ground in leap years.