Seven laws in geomantic omen

It is mentioned in the Book of Changes that the life phenomena of many creatures on the earth are related to seven and multiples of seven, including us. For example, saving a life is better than building a seven-level pagoda. It takes seven inches to hit a snake. Husband and wife passed a what? Seven-year itch, what period does a person want after death, the first seven!

Then there are seven stars in the Big Dipper, 28 stars, and multiples of seven. We have 14 knuckles in one hand and 28 knuckles in two hands. People still have seven tricks: the expected date of birth of a chicken is 21 days, that of a duckling is 28 days, that of a puppy is 63 days, that of a pig is 112 days, and that of a human is 28 days, all of which are multiples of 7. This natural law was recorded thousands of years ago in the Book of Changes.