20 1 1-7-30, and the Gregorian calendar indicates that "turtles are not allowed to move"

Avoid: not suitable. Migration in the yellow calendar refers to being suitable for moving and so on. In ancient times, when something important happened, it was called "making a turtle" to burn the tortoise shell and look at its cracks to predict good or bad luck. "Li Zhou Guan Chun Da Bu": "Taking state affairs as the tortoise's eight lives." Zheng Xuan's note: "There are eight people who can decide state affairs, and they must make their words so that they can kill turtles." Zhou Li Chun Guan Dabu: "Among them, Guo Dazhen, Bu Lijun and Bu Dafeng are monks and turtles." Zheng Xuan's note: "To be a turtle, fire is the symbol, which means to burn left in spring, left in summer, right in autumn and right in winter." Being a turtle is divination, not divination.

To sum up: don't move as a turtle, that is to say, don't move this day, don't divine.